I think if vacation stresses her that much, it’s not wise to vacation together. If you aren’t interested in ending this marriage, I’d stop traveling with her. I assume vacation costs money. I’d put that money into something else. At the very least I’d insist she seeks psychiatric help or at least therapy before I get in the car with her

She needs to seek some serious medical help. What’s with meltdowns and throwing fits. It’s not normal. Her talking to guys is the least of the problems. She sounds out of control