That's annoying. Also, she's going to have to find a way to present her eventual results to Bella in a way that will make her uninterested in trying other things with illusion sound, without explaining that she knows what things are dangerous.

"Produce an illusory voice saying "banana pancakes", at sixty decibels."

This works. It copies her voice.

She's not at all surprised by the fact that it copies her voice, but is a little bit surprised by how her voice sounds from outside her head.

Possibly the limitations of this spell in making any indirectly specified sound is because she didn't put "knowledge" in there. But since she's been getting such polite failures, before she goes and does a whole second diagram, she's going to do one more test. She puts a glowing rock (a blue one, as it happens) on the diagram, reviews her wording notes a few more times, and says "Produce an illusory voice saying the most recent incantation used to enchant this rock, at sixty decibels."

It recites the incantation in her voice.

Yessss, payoff! Possibly payoff that a non-dragon researcher would have died without getting, but instead the researcher is her and she's fine.

Margaret's going to need an audio recording setup before it'll be worth it to start in on the Tikbalang medallion, since the odds they were speaking anything she can memorize on one playback are very slim. Furthermore, all that translating, plus the occasional hours she spends doing things that aren't magic, have taken her all the way to pretty late Sunday evening. Margaret sets some music-mixing software to downloading on her laptop and watches the progress bar from her bed in her dragon fullform for a while, then turns into a human and goes to sleep.

The next morning is her meeting at the doctor's office! She brings her healing rock, her notes on it and its predecessor, and a couple copies of the latest version of the diagram, on the off chance the doctor wants to look at it.

The doctor glances at it but clearly doesn't understand any of it. "What's the procedure for using this?"

"Just have the person touch it and it does its thing. It should work on all types of critters and also regular humans, and touching it and letting go a few times might do more than just touching it once but I haven't done enough tests to be sure."

"Anything it's contraindicated for?"

"I've never seen it make anything worse and I'd be very surprised if it did, but it's unlikely to help much if at all with mental problems and it can't regrow missing parts, like if someone's lost a leg it just won't affect that."

"Mm-hm. But it doesn't care about viral versus bacterial, anything like that?"

"Nope. Viral, bacterial, cuts and sprains, haven't tried allergies but it should at least do some symptom relief even if it can't fix the underlying problem."

"What's the exact nature of the deal you're offering with this rock?"

"I'm thinking a monthly fee and also you tell me whatever you find out about what it does and doesn't work on, so I can make ones that work more broadly or handle things this one can't."

"Are you offering this to anyone else?"

"Eventually I want every critter doctor and hospital to have one, if I can make them good enough." She also wants every human doctor and hospital to have one, but that's a separate problem. 

The doctor whistles. "I guess we'd make up for it in volume, if people came in for the sniffles."

Nod nod. "How much do you think it'll make you per month, if the other doctors here decide to get one too?"

"I'm not sure. It might break even in dollars or worse, but I guess it'd cut way down on all the insurance headaches."

"And if it replaces a prescription you can charge whatever the prescription would have cost, maybe?" 

"Competition applies to doctors as much as anyone else. My practice is the only practice treating adults in this Avalon right now, so we can collude without outright forming a cartel, but if the pediatrician or that vet broadens their practice or someone who isn't even a doctor could make two dollars a pop charging someone to touch a rock - I don't know how much you're going to charge for the rocks -"

"I don't know either. I want to do whatever gets the most people healed and doesn't get anybody in legal trouble."

"You could insist on only selling them to doctors, so we know to keep an eye out if someone comes in with something we don't know to be on the list of things the rock handles alone. That'd make it easier to navigate the business end."

"I could do that for now, and probably should, the rock isn't nearly as comprehensive as proper medical treatment. I wouldn't want to commit to doing that forever, though."

"I suppose not. I'll make sure to save for my retirement. It's one thing if people use these for colds, though - it's another if they heal superficially but leave you contagious, or mask the symptoms we use to catch things like cancer early so we don't find it till it's late."

Nod. "That's why the main thing I want is the information. What it's good for, what it isn't, what things it helps with the symptoms of but doesn't fix, any effects that somebody might not want every time like if it 'fixes' the effects of exercise and makes you build muscle slowly or something. I want to learn enough to advise people better, and enough to make better versions that don't have any flaws this one might."