Well, I was just speculating my opinions on what could be going on and why she blocked you, but nothing is true unless the girl herself tells you what her problem is.
>I helped her more than she helped me yaar
Good, all the more reason that you should move on. You clearly specify that it was a strictly professional relationship, and you didn't do anything personal if I'm right. She could've thought of you that way, and considering that she's cute, she would have similar army of simps behind her who are ready to give ten times the more effort than she actually puts in return, so it's probably not something new to experience for her. She's just being herself.
You should've known that simply being nice and helpful isn't even a proper way to make someone fall in love with you. What really matters is that it's over, and you have to move on and think about the future.