And I've never met a doctor who's first question to a patient would be to ask them what medication THEY want
And THAT is not what I said. If she gets ideas and opinions from others, makes a list of them and takes them to her Dr and say, "I've heard about these, what do you think about them?" that opens up the line of communication between the Dr and the patient and the Dr can tell the patient, "Well, here's what I think about that option and your particular situation."
Yes, the Dr is FAR better qualified to determine what is best for their patient than the patient is. But that does NOT mean someone can't look things up, look into other medications, take them to their Dr and discuss the options with their Dr, especially if they are like the OP and question their Dr's choice. And since the patient can't (legally) get the medication without their Dr anyway, there is absolutely no harm in someone asking, "What medication are you on for this issue and how does it affect you?" and writing it down to talk to a Dr about. What's the worst that could happen? The patient could realize the Dr really does have their best interests in mind when prescribing medication. And at the very least, it opens up a good line of communication between the patient and the Dr.