She's definitely chaotic neutral.
And you should leave the group. It's pretty much a standard rpg rule that the DM will always favor the significant other.
You see, too many women are not satisfied with anything other than she must be her man's only world, and will do whatever she can to disrupt anything else the man does.
For example, my friend had a nice collection of model ships that he proudly displayed. His wife started saying that was all he cared about and didn't care anything about her and that her doctor said he was suffering from clinical depression when that wasn't true at all. Eventually he relented and I keep those models for him. In fact he had to eventually get rid of all his gaming books and other games or she wouldn't sleep with him and spread all kinds of lies about him.
Eventually he dropped her and moved away.