Why DId She STart Following Me On Instagram?

Maybe she likes reading your posts, she doesn't have to prove it by clicking the like button.

Maybe she clicked follow by mistake. Maybe she thinks you're awesome. Maybe she was bored. Maybe her account was hacked.

It. Does. Not. Matter.

Maybe she is a serial killer and several of the 800 she is "following" are now dead.

Or maybe she is a vampire...

Here is a definition of a 'casual' relationship.

1. relaxed and unconcerned.
"she regarded his affairs with a casual indulgence"
synonyms: relaxed, friendly, informal, unceremonious, easygoing, free and easy; More informallaid-back
"the inn's casual atmosphere"

•made or done without much thought or premeditation.
"a casual remark"
synonyms: offhand, spontaneous, unpremeditated, unthinking, unconsidered, impromptu, throwaway, unguarded; More
informaloff-the-cuff
"a casual remark"
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So don't read too much into it.

It's no big deal.

Maybe a friend of hers or a friend of a friend liked one of your photos and she liked it too.

I'm a FB friend of a photographer I started following three or four years ago. We have similar interests in the arts. That's it. That's all.

It is no big deal.

Wait... Set to public or private?

If public, maybe you hash-tagged the #city and she's a #followback whore and #unfollows when she gets her numbers... #cleaninguphouse.

She just likes the quick attention from a bunch of strangers.

It could be many things. My daughter followed a boy on the request of a friend. This friend likes this boy and wanted my daughter to follow him for her in a sense - maybe so he doesn't realize who is really the one following him.

I told my daughter that was dumb because now he probably thinks you like him and now her friend keeps asking her over and over what he is saying/sending whatever the heck and she is annoyed by it.

Or it could be she likes you herself. Why don't you ask her?