IMO you have a "right" to angry at your mom! Mothers and fathers are supposed to take care of us, and understand...at least that's the way it was first delegated.

Of course we all know that doesn't happen at times.
And though you do have the "right," you are wise to move on, because anger like that only hurts us, ourselves.
As for apologizing because of behavior from a disorder, that again, is up to you. If you think someone will understand, then do so. If you think you need to just let them know it wasn't "on purpose" then tell those people also. But if you know they really don't give a whip, don't bother as you will only become more frustrated.
We don't find all the people around US apologizing for every thing they do that is irksome. Perhaps it is only your disorder that makes you feel you owe anyone anything?

I'm good with you ((((fuzzybear)))) and you, me.