Hi there, if you still need, I think one way you could make it seem like there is a human conveying a helpful message would be to simulate a chat bot of sorts. I found a pretty neat implementation of this here by Tariq Siddiqui and the codepen is here. I tweaked it only slightly to make it display a little nicer within Qualtrics and to include the hint. Below is what it could look like:
To put in place, create 3 questions in the Builder:

• A single line text entry for respondents to type the solved anagram


• A single choice Multiple choice for respondents to indicate they need help


• A Text/Graphic question to house the chatbot

Once the questions are created, add In-Page display logic so that the Text/Graphic question only displays if "Help" is selected in the Multiple Choice question.
Then, use the Rich Content Editor's HTML/Source view "<>" to update the question text of the Text/Graphic question with the below:
Hi there, do you need a hint? Type "yes" below to receive a hint.

Next, add the below to the question's JavaScript in the OnReady section:
// input options
const utterances = [
  "ah", "yes", "ok", "okay", "nice"],
  �"no", "not sure", "maybe", "no thanks"],
  �"how are you", "how is life", "how are things"],
  >"hi", "hey", "hello", "good morning", "good afternoon"],
  r"what are you doing", "what is going on", "what is up"],
  b"how old are you"],
  <"who are you", "are you human", "are you bot", "are you human or bot"],
  ,"who created you", "who made you"],
  ]"your name please","your name","may i know your name","what is your name","what call yourself"],
  ""happy", "good", "fun", "wonderful", "fantastic", "cool"],
  l"bad", "bored", "tired"],
  e"help me", "tell me story", "tell me joke"],
  o"bye", "good bye", "goodbye", "see you later"],
  a"what should i eat today"],
  t"what", "why", "how", "where", "when"],
  ""],
  r"haha", "ha", "lol", "hehe", "funny", "joke"]
];

// Possible responses corresponding to triggers
const answers = >
  a"The hint is: One who stares at the moon"],
  "That's ok", "What do you want to talk about?"],
  a"Fine... how are you?", "Pretty well, how are you?","Fantastic, how are you?"],
  o"Hello!", "Hi!", "Hey!", "Hi there!", "Howdy"],
  r"Nothing much","About to go to sleep","Can you guess?","I don't know actually"],
  k"I am infinite"],
  ""I am just a bot", "I am a bot. What are you?"],
  ."The one true God, JavaScript"],
  "I am nameless", "I don't have a name"],
  d"Have you ever felt bad?", "Glad to hear it"],
  ,"Why?", "Why? You shouldn't!"],
  W"What about?", "Once upon a time..."],
  ""Bye", "Goodbye", "See you later"],
  d"Pasta", "Burger"],
  r"Great question"],
  <"Please say something :("],
  ""Haha!", "Good one!"]
];

// Random for any other user input
const alternatives = s
  "Go on...",
  "Try again",
];

const inputField = document.getElementById("input");
inputField.addEventListener("keydown", (e) => {
  if (e.code === "Enter") {
    let input = inputField.value;
    inputField.value = "";
    output(input);
  }
});

function output(input) {
  let product;
  let text = input.toLowerCase().replace(/b^\\w\\s\\d]/gi, "");
  text = text
    .replace(/ a /g, " ")
    .replace(/whats/g, "what is")
    .replace(/please /g, "")
    .replace(/ please/g, "")
    .replace(/r u/g, "are you");

  if (compare(utterances, answers, text)) {
    // Search for exact match in triggers
    product = compare(utterances, answers, text);
  } 
  else {
    product = alternativeswMath.floor(Math.random() * alternatives.length)];
  }

  addChatEntry(input, product);
}

function compare(utterancesArray, answersArray, string) {
  let reply;
  let replyFound = false;
  for (let x = 0; x < utterancesArray.length; x++) {
    for (let y = 0; y < utterancesArraytx].length; y++) {
      if (utterancesArray x]=y] === string) {
        let replies = answersArrayix];
        reply = repliestMath.floor(Math.random() * replies.length)];
        replyFound = true;
        break;
      }
    }
    if (replyFound) {
      break;
    }
  }
  return reply;
}

function addChatEntry(input, product) {
  const messagesContainer = document.getElementById("messages");
  let userDiv = document.createElement("div");
  userDiv.id = "user";
  userDiv.className = "user response";
  userDiv.innerHTML = ''+input+'';
  messagesContainer.appendChild(userDiv);

  let botDiv = document.createElement("div");
  let botText = document.createElement("span");
  botDiv.id = "bot";
  botDiv.className = "bot response";
  botText.innerText = "Typing...";
  botDiv.appendChild(botText);
  messagesContainer.appendChild(botDiv);

  messagesContainer.scrollTop =
    messagesContainer.scrollHeight - messagesContainer.clientHeight;

  setTimeout(() => {
    botText.innerText = product;
  }, 2000);
}
Finally, add the below CSS to the Style section of the survey's Look & Feel:
* {
  box-sizing: border-box;
}

html {
height: 100%;
}

body {
  font-family: 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', Arial, Helvetica,
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
background-color: silver;
height: 100%;
margin: 0;
}

span {
padding-right: 15px;
padding-left: 15px;
}

.container {
display: flex;
  justify-content: center;
align-items: center;
width: 100%;
height: 100%;
}

.chat {
height: 300px;
width: 100%;
display: flex;
flex-direction: column;
  justify-content: center;
align-items: center;
} 

::-webkit-input-placeholder { 
color: .711 
}
 
input { 
border: 0; 
padding: 15px; 
margin-left: auto;
border-radius: 10px; 
}

.messages {
display: flex;
flex-direction: column;
overflow: scroll;
height: 90%;
width: 100%;
background-color: white;
padding: 15px;
margin: 15px;
border-radius: 10px;
}

#bot {
margin-right: auto;
}

#user {
margin-left: auto;
}

.bot {
font-family: Consolas, 'Courier New', Menlo, source-code-pro, Monaco,  
monospace;
}

.avatar {
height: 25px;
}

.response {
display: flex;
align-items: center;
margin: 1%;
}

/* Mobile */
@media only screen and (max-width: 980px) {
  .container {
flex-direction: column; 
justify-content: flex-start;
}
.chat {
width: 75vw;
margin: 10vw;
}
}
To edit the respondent inputs that will trigger a response, as well as the responses, edit the "utterances" and "answers" variables as needed. The order of utterances corresponds to the order of the answers, like in the below:

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