This person has 2 different things going on. The first is the gender dysphoria, which why she identifies as a woman. The second is body integrity disorder, which is super weird, and super scary. Basically it means that your mental map of your body doesn't include parts that you have. Like legs for instance. People with this disorder have resorted to amputating their own limbs. What's really fascinating is that we know this is something that happens physically in the brain because it often comes about due to brain damage from accidents and strokes and stuff.