Many of those can be understood very loosely.
For instance, I know of a woman who has been married a number of times who has claimed “Emotional abuse” every time. She has committed adultery (while legally married) for at least one of the marriages, also siting “emotional abuse”. For her it means “I want someone new”.
It is a hard teaching, but there is a reason the view used to truly be “Till death do us part”. Does it mean pain? At times. Does it mean you find yourself on the outside without trying? Possibly. That is where a good pastoral group has to step in. To often it is a free for all, and the kids suffer.
It is a matter of integrity and honesty for everyone. But if you know this lady you mention is lying, then God knows too. And He’s the one she should be concerned with.
In the meantime, there is real emotional abuse, and real physical abuse, and real infidelity, and real desertion, and real refusal to support.
Just because someone claims it doesn’t make it so, but we’ve all seen the real stuff, too.