What Are Some Signs That Tell You She Isn't Interested?

BullShark
This is gonna be a long read, so if there are any lazy readers who purposely like giving shit takes, complaining and saying "I'm not reading all that bs crap", kindly click off because this isn't one for you. Only looking for serious advisors here.

As the title suggests, what are some signs, according to you, that girls show subconsciously, that tell a guy she isn't worth chasing after and that doing so is a mistake?

I know a girl in college irl who I've known for around 3 going on 4 years now. I was always attracted to her, to some degree, but I never made a move on her or tried to, because she was dating someone else at the time and I'm not the sort of person who shoots his shot on taken women (more on that later).

She broke up in April, and it was a nasty break up. I was there for her whenever she needed me as a shoulder to cry on, a general source of advice and just a friend who you could talk to, and she'd always tell me how thankful she was of me.

Now it's the end of August going into September, and she currently tells me she's finally completely over the guy and is ready to go out there again. She's learned to laugh and joke around like she used to before, and over the past months, I've noticed that her behavior towards me has changed a bit. There are times when she's flirty and playful like that but then there are moments when she acts completely estranged and not in the mood. It's kind of a paradox and over the years I've known and talked to women, I can't really understand what her angle is here or what she really wants.

My other friends tell me she's totally into me as well and that it's about damn time I make a move quick or else I'll lose her forever, but I'm still not convinced. Whenever I try suggesting a lunch or dinner date, even proposing that I drive us there myself too and savw us the Uber trip, she accepts but then cheeses out last minute. It's happened twice already. She even declines my calls and ignores my texts sometimes. Any advice?
What Are Some Signs That Tell You She Isnt Interested?
What Are Some Signs That Tell You She Isn't Interested?
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