My mom in law normally has my son every Friday night for a sleepover, and my youngest DS on a weekday for a few hours.
A few weeks ago she had my youngest, and saw my eldest after school and said I'll see you Friday for our sleepover, bring your favourite toys we'll play before bedtime.
Friday comes along, MIL texts and says she can no longer have son as she has a party to go to...
I replied funny how all of the sudden last minute you have a party, and she said she only got invited the night before.
I replied with you only see my children when it's convenient for you, and she has a rant saying she is helping me out.
I don't see it like this, I see it as her seeing her grandsons.
AIBU that I haven't replied, baring in mind she hasn't even messaged me asking how they both are, when she hasn't seen them in 2 weeks.