Many women with development disabilities are under anesthesia during pelvic exams or don’t get them at all (or as recommended). However, educating about pelvic exams may be an important part of teaching sexual health. I’ve included the link to a video that may help.
This is a brief video that goes through the basic procedure of a woman having a pelvic exam. This could also be a good video for teaching about female anatomy. It has a lot of technical terminology but it also moves nice and slow.