A friend of mine (F1) fell out with me a few months ago after I admittedly said an insensitive comment to her (I thought I was being helpful but my brain engaged before my mouth). A follow up attempt to redeem the situation with humour wasn't well received, so I swiftly apologised but heard nothing.
A mutual friend of ours (F2) took ill a month later and so I txt F1 to let her know as she lives far away from me and F2. F1 continued no contact with me but. Had received my messages as she txt F2 to see if she was OK.
Another month passed by and I sent a very long grovelling apology to F1 hoping she would forgive me. I heard nothing again.
F2 took ill last week but this time I never txted F1 because she's not spoken to me in 2 months so I figured she won't forgive me and I'm not her personal newsfeed. F1 found out that F2 was ill again and has finally texted me in anger that I didn't inform her about it.
So AIBU not have not texted when F2 was ill again and how should I respond back?