On Friday I messaged a friend saying we should meet up, she said she'd love to and suggested Monday (today) lunchtime. I said that sounded good, but I haven't heard anything since. This isn't the first time that we've started making plans and then she's gone silent and I've had to message her to ask for more details and she's replied at the last minute to arrange it. But it's never been as late as this. She suffers from mental health issues so I understand that she might not be feeling up to either chatting loads or seeing me, but she's been active online since Friday but hasn't opened my messages.
Aibu to feel a bit annoyed that she has just left me in the lurch? I get that she's struggling but it feels a bit rude. Should I say anything to her or just wait until she eventually does reply? (After lunchtime, I'm sure)