And then never responded to them for the next two days until he texted her again? And then tried to blame him?
As soon as she woke up and realized she'd slept through their date (or whatever we're calling it), if she gave even the tiniest little fuck, she'd have texted/called him back. She didn't. I mean, that's just the most basic courtesy. "I'm sorry I accidentally slept through the whole thing."
Is it normal for people to have absolutely no manners or what?
It probably wasn't such a big deal to her as it was to him. Just a gathering of people. We're not even sure if she knew the others? In her mind, she might've been skipping out on a group event where she sort of knew one guy (Aldo) and not the rest. Sure, she could've acted better too. But, Aldo can't control that. He seemed dissappointed with how he behaved, which was a bit childish. He can control and fix that though.
But, in the end, it was just a missed bowling date and she had a good reason. So, it's a fairly trivial thing. No one should be getting bent out of shape over it and assigning blame is too much for something so small. There is a lesson to be learned though and Aldo seems to want to learn it. Maybe? That's always a good thing.
Mr Awe
Apparently I'm behind on my social etiquette, because if I ever agree to come to something and then I don't show up, I give an explanation either before or right after. I don't wait for days until someone asks me why I wasn't there.
The only other explanation I can think of is if the invitation was more like "come if you feel like it" and she didn't actually say she'd be there, in which case she hadn't committed.