Girl's Behavior

She followed me back on her main but not her finsta? What could this mean?

I followed a girl and she followed me back on her main. I also followed her finsta and she let me follow, but did not follow me back there. Does that mean she probably isn’t interested? In my experience, girls that liked me back or had interested followed me on their finsta too

She followed me back on her main but not her finsta? What could this mean?
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