Girls, What does it mean when a girl texts me "okie bye" after I tell her I need to go?

So, this female friend of mine and I recently had a very deep conversation where we got closer and offended each other on some level. We recently had a short conversation and when I told her that I needed to go, she said "okie bye". It was all over text. Also, this girl is more of an acquaintance rather than a friend.
Girls, What does it mean when a girl texts me "okie bye" after I tell her I need to go?
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