I don't know if it's so awful that she asked - doctors are mandated reporters, so she may have felt she had to. It is pretty awful that she's so unknowledgeable about yeast infections
I had an experience last year with an urgent care doctor (out of state) who was also totally misinformed about the medical condition we were visiting for. I know there are about a million different possible illnesses, but you'd think a doctor would have access to reference materials (Google, even!) to look up basic information - like about yeast infections. I think probably the most effective response would be to write a letter of complaint to the doctors whose names are listed as the owners of the practice.
If you really felt the complaint needed more official attention, there's a licensing board where complaints can be made. (personally, I don't think this rises to that level, nor would I want to take a chance that DCFS would get called in, but it's interesting to know in case you ever need to) - https://www.idfpr.com/dpr/FILING/Complaint.asp