Why would a friend initiate plans with you multiple times but not follow through/flake?

This was a pattern and she never apologized. I was also a student of hers in her yoga class and I noticed she’d be more encouraging to the other students but to me she was more critical (I’m a beginner, but I’m there and I’m trying my best!). I don’t have a history of any drama with her or anyone she knows — we run in different circles. Anyway, she asked me to do coffee once and I agreed and asked which day/time? Then didn’t hear anything. Months go by and she randomly reaches out to me asking to do coffee that Thursday and that she’s sorrry because she’s been traveling a lot…so I agreed on Thursday and then she, again, never followed through on a time or place. Didn’t apologize for that either when I saw her next/had another class with her.

Why would a friend initiate plans with you multiple times but not follow through/flake?
Post Opinion