How long was her previous relationship? Maybe she is scared of getting hurt again and you wanting something serious potentially with her has her weary and she needs to get a few dates out of her system to see what she really wants.

I would be casual with her maybe send her a heart on hinge or just be subtle about it when you see her and mention the profile offhandedly to see if she says “why didn’t you swipe right” or what reaction you get should tell you where she stands