Is she bisexual/lesbian?

Anonymous
I met this lady (she's in her late 30s or maybe already hit 40). I'm 30. She's a student at my uni.
I always found her a bit weird but we talked. I noticed that after a couple of conversations, she had hugged me once and looked me up and down which I found a bit uncomfortable.

She would also mention she's going on dates with guys so I thought she's straight but she never went on them. I like a guy at my uni and each time I told her about it, she showed 0 interest and was like oh but he looks really young (he's 26 and he likes me too).

Once she wore an olive green jacket and I complimented her that it looks nice with her skin/eyes colour and she started wearing that. For the next few days, she wore clothes similar to that or bright pink or even full black (like me) and I would compliment her.
Then once in a cafe, she started pressing her lower back constantly and it was a bit weird but I didn't comment (she said she has a back issue but it was so strange because she kept rubbing it and it was indeed strange).

Everything was om but after that, her attitude changed and she now barely chats with me nor sees me and acts cold.

I suspect she's bi and may have liked me but I didn't really take notice of her in that way so she is now distanced herself?
Is she bisexual/lesbian?
2 Opinion