Maybe you are right, the way to get help is to explain it to her... use good reputable sites like Mayo Clinics or an article on SI that you thought was informing and impressive at the same time.

If you bring this up to her, you are coming to her from a position of strength... YOU are bringing it up, YOU are answering her questions... YOU are asking for help. If you wait for her to do it, first off, you don't know what she knows and what she doesn't, where she got her info from and if that source is reliable (I know there are a lot of myths about SI out there.

Also use your SI support network.

Although I don't SI, I can epathize with you in that we both have issues that are stimatized.

Also, hang out with your support buddies after you talk to her. That's what we are here for.