Is she flirting with me

Im a pisces male and i was at a class thing and this leo woman was there... for the first three days she didnt say much of anything to me but we made eye contact from across the room a few times, then on the last day she sat Really close to me on the ground while we were doing an activity. she was close enough that we touched hands once. then later we finished our part in a group project and she came up next to me and leaned on me and laid her head on my chest... then a couple days later i sent her a DM on instagram, we talked for a little bit then it stopped, that happened like 3 times then i gave up, then not too long ago i talked to her again and she seemed pretty interested but she had just got off of work so she told me she was gonna go to sleep... whenever we actually tlaked it seemed like it was going great but she seemed to just lose interest or something, im just confused

Pisces, this op is quite confusing.

Do you initiate conversations only to be rejected?