I would be VERYYYYYY careful with this situation moving forward. If you’re going to divorce her, then you better mean it. If you threaten it and then she decides she’ll get a job…. It’s only a matter of time before she gets knocked up and quits again. I have to say, it’s weird that a 33 year old woman quits jobs this frequently anyway. She has been showing you that she’s not stable for a while now.

I do think you should go ahead and proceed with the divorce. Just don’t let her trick you back into the relationship. So you need to think long and hard whether you have decided this is a “one time thing” or whether this is her personality (that’s my vote)