I was quite good friends with another woman at work for a few years. We went for lunch together most days, went for drinks/coffee and running together outside of work etc. She confided a lot in me about her messy divorce and debt problems it caused and I was her shoulder to cry on many times. About 18 months ago I moved to another team (not a promotion or anything, just a sideways move) and after that she completely disappeared off the radar (we've all been working remotely). I've messaged her a few times about how she is but have got very little back. Sometimes she's not replied at all.
I'm leaving my job this week and after it was announced lots of colleagues messaged me wishing me luck etc. but I've heard nothing from her. Do I message her before I leave to say bye and suggest to meet up for a coffee or something? Or just leave it?