My friend is quite flakey. She's nice enough though and I do enjoy her company when we meet up. Tonight she sent me yet another message cancelling a planned meet up tomorrow morning once we've dropped the kids at school. Rather than reply with my usual 'yeah that's no problem' I sent a text back saying that's a shame and that I'm disappointed as I turned down making plans with another friend as we already had it planned. She's come back with an apology but I think she's a bit annoyed with me. I get fed up of sitting on my hands though, I don't want her to think of me as a total pushover because I'm not.
AIBU to voice that I'm a bit peeved or is it more the done thing to just say it's fine and then not make any other plans with her?