Girls, What causes a girl not talk to me at first but then suddenly starts making an effort with me?

[ando90]

[devilish-cutie]

you need to explain more - what means not to talk? You talk/message her and she doesn't respond or what?

[ando90]

Like she never acknowledged me ever in person. Then suddenly started making some effort with me in chatting and coming over to help me. She literally doesn't know me and suddenly she is helping me and standing next to me and making conversation. When I saw her yesterday out of nowhere these feelings have come on suddenly. Given I've seen her for quite a few weeks now. But she is chatting with me

[devilish-cutie]

maybe she just didn't know you really so she didn't say to you anything but then she realized you are ok and wanted to get to know you
if you tried to talk to her and she ignored you that would be another thing
if you like her than put in some effort as well in trying to get to know her

[ando90]

This time she actually came over and sat next to me and then she was standing close to me why looking at my paper with her whole body facing. She was literally so so close to me. Then she starts more conversation with me

[ando90]

Later that same day.