How do i know when i should make an effort to talk to my crush?

I hate not knowing whether to be the one to make the first effort to text or talk to the person i like, or if i should just let things be and see when i see her next time. Part of me wants to make the first effort so to remind them that i havent forgot about them, but at the same time i say to myself, if they really wanted to talk to me then they would text me. But then i think that what if they are thinking the same thing about me? I dont want to look annoying or vulnerable and sometimes i worry if i text them first that i will look annoying. It is also hard since this person is very flirty to me at times, and other times is very nervous and shy and avoids me. ( i think part of that is because they are in denial or the closet about being a lesbian). She knows i am a lesbian ( i am very girly looking though). Me and this girl have hooked up before ( and she made all the moves on me) but she obviously hasnt accepted that she is gay yet. When she avoids me or acts awkward it makes me think she hates my guts, but when she is warm it makes me think i should make more of an effort. I just dont know what to do. But yeah any advice would help. ?