I think you should confront her on every of this points. That's your time and you are paying for it, I don't really know what the true ethics says in each of this cases (especialli her trying to persuade you in taking the meds from her husband), but it's not right at all she's treating you like this.

And if after hearing what she have to say about this you are not convinced (or if she keeps on doing this stuff), then I think you should find someone else.