Started to not reply to about 50% of messages so I stopped bothering.
Stopped initiating first anymore even though she used to.
She then apologised in person and suggested we have a coffee next week to catch up.
So a week later, I text her on WhatsApp asking what date is best, giving her a list of dates I can do.
She read it (has the blue ticks) and never replied, that was a fortnight ago.
She was the one who suggested it.
She's done this before, I did feel like she was trying to distance herself, which was fair enough if that's what she wanted, but then she'd come back.
I know the best thing is to just ignore.
The coffee incident made me feel stupid, I don't know why but I felt embarrassed she read it and didn't reply.