> Help your doctor friend [...] but also make it clear that [...] what you're doing comes with a message that you expect her to pass on

I don't really agree with this part. You can't demand that another adopt your morals, certainly not genuinely by offering conditional help. I avoid people like this, because they think they've figured out what's best for someone else and judge everyone who doesn't think the same.

Just aim for the highest good, and course correct since chances are you don't know what that really is. Others will join or oppose you, that's feedback.