Is this a weird way to tell her that I’m interested?

Anonymous
There is a lesbian in my class and I know this because we were in a class together last semester where she openly admitted her sexuality.
I wasn’t attracted to her at first. Maybe a little over halfway in the semester she moved seats and sat diagonally behind me (next to her acquaintance who sat behind me ) As I was walking in class one day up the aisle to my seat, I looked over and noticed she was looking at me. It was kinda awkward and her expression was open almost looked like she wanted to say something but obviously wasn’t going to. And I’m not exaggerating by saying this but she kind of was looking at me with want lol. I broke the eye contact and sat down. It went on for maybe like 3-4 seconds as I was walking up until I looked away.
This semester she changed her appearance a little and I’m very attracted to her now. She has another friend in the class who she always talks to and sits next to. The friend is social. On the first day of class at the end we had to go around class and mention something and the girl waited until it got to me then left after I spoke.
I’ve seen her glance at me a few times. I’ve seen her talk to other girls in the hall and stuff but I don't know if she’s shy around me or thinks I wouldn’t like her ( I have rbf) Last week she sat next to me because her seat next to her friend got taken. I was excited but kind of nervous and she chose the seat next to me when there were others. Her feet were kinda near mine and I saw her fidgeting with her hands but she seemed chilled out and didn’t talk to me and it’s annoying especially when I’ve seen her do it for other girls.
I am pretty and have been told I am but I’m very feminine so most people assume I’m straight when I’m bi so maybe she thinks i wouldn’t be interested. The semesters almost over and Im feeling bold. I only have her email. Should I send her an email telling her I think she was cute but I was too scared to say anything? I don’t really have opportunities to talk to her.
Is this a weird way to tell her that I’m interested?
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