OP here, thank you all for the replies!! Just to confirm she's not religious at all or anything like that and acts as if she's really supportive to my face before going behind my back and acting as if it's demonic or something. The awkward part, though, is that my younger sister came out as lesbian a few years ago too, and my mother was more than happy to discuss her and her girlfriend, but despite myself having been out to her for 8 years now, she still seems to be really awkward about me dating guys. Also, to the few individuals who suggested that I must look like a girl, I'm more of a beard and suit sort of guy personally. On another note, thank you to those who suggested calling her my father and going into her work place in Drag; I'll be staying with her next month for a little while and may have to borrow one of my sister's dresses and cosplay wigs to roll up to her workplace - along with unshaven legs and face, whilst maintaining the usual booming man voice, of course.