Not sure how old you are, but my son is 19 years old, so I can talk from the perspective of a parent and mother. I have mentioned how I felt to my son, as it's an honest talk with him, not a way to gain attention or anything like that, but just so he aware of what I'm going through or been through or feeling.
Maybe your mother is doing that, as she said it was the film that reminded her of a dream, of being screwed over. Yes she said it casually, so probably not much reality to the thought. Is she maybe the type of woman just to respond like that if you ask her something.
On another point, As a mother it's devastating to have end of relationship, and to then reassess your life, your feelings, to question thimgs and yes to feel annoyance and feel let down by the ex. Maybe she wants you to be a little frustrated with your dad, but not to hate nim,,and this may stem from her feeling that he's got to walk out live his life and have the best of both worlds, and kids that dote on him, while she still does all the caring. (As I said not sure how old you are or what full circumstances are) Just saying, this may or may not be the case, you Wilson.y fully know by asking her. If she said your generation is soft its highly unlikely she will go counselling, but sounds like she needs to get things off her chest. If you can't handle the way she blurts things out and she won't Change at the moment, your gonna have to look after your own emotional health and let it go over your head, or tell her to call a friend or family.
I do try hard not to make my son feel any frustration I feel towards his dad, but from time to time it slips out, but we are able to have open conversation about how I made him feel. Or why I said what I said.. if this type of thing is regular with your mum, I'd strongly suggest you encourage her to talk to friends.my mum drags me down on occasion and she never go counselling, she's also in her 60s, it's not something that generation seem to feel they need.
If however you have assess the situation and realised she's doing it to gain attention, then please don't let yourself be emotionally manipulated by anyone, including parents.
Hope this gives you a different perspective, all the best.