NC as identifiable.
Fairly new friend, we met via an activity our DC attend. She saw an ad for another activity (for DC but to be honest it’s more of a parent social thing as babies don’t get much out of these things I suppose) and we agreed to go together.
The first time we planned to go to this activity I stupidly mixed the dates up. I have no idea how, I just had it in my head it was on one day but it was the day before. She went, asked what happened and I explained and apologised. We then went to the next one together and had a great time.
The next week, I couldn’t go as I was waiting for PCR results (neg).
The week after that, I had to cancel as I’d been in contact with a covid pos person. Can’t be helped. She went alone. I wondered if she seemed a bit short in her texts but assumed I was imagining it because it’s not like I could do anything about being in contact with a positive person.
The next week (a couple of days ago) I was unable to go because I’d been visiting sister in another city and with the baby being up all night and one thing or another the day got away from me (as it does with a young child!) and I wouldn’t have made it back to the place the activity is on time. I explained this to her and apologised profusely (I understand this would have been really annoying but it couldn’t be helped). She didn’t reply.
I texted her today to arrange us going to the next event together and she said seeing as I’ve cancelled four times she’ll just see me there if I make it. I haven’t cancelled 4 times?! The first time was a genuine mistake. 2nd time was waiting for covid test result. The 3rd time I was isolating. The 4th time yes I will admit I cancelled. But that’s one time. I haven’t replied yet, I’m annoyed that she’s acting like I’ve said ‘can’t be bothered’ 4 times! 
AIBU to be annoyed that she’s annoyed? Also it’s not like me not being there means she can’t go or enjoy the event. It’s not as if I had invited her round to mine and then just not answered the door!