Your situation reminded me of my friend's wife who at the end commit suicide last year over a petty argument as well. Only after her death my friend started searching if she has any mental health issues and it was described as signs of BPD.

Their argument was my friend wanted to hang out with his other younger brother for a badminton match and his wife was extremely unhappy about it that he would rather spend time with his brother than her and she threw a tantrum threatening to tear up their marriage cert. My friend ignore her left the house to cool down to only find her suicided when he returned. That was a dark day, I was with him at the police station to make report and questioning to rule out criminal elements.

He is still recovering from the loss as he really loved her very much but felt a little relief as the lost freedom has returned. Luckily they have no kids so he is back to single and very being cautious in looking for mates.

He went through all the things you described over the 6 years of marriage, it was up to a point where anything can be a fault and use as argument. He can't even look at women/girls that dress up nicely or else another round of argument. Return slightly late from work, argument again and accused of hanging out with girls and etc. He tried his best to please her but at the cost of being a caged bird. He was so depressed whenever I get to meet him and was like walking on egg shells on what he says or do.

You're in lucky she started these signs before marriage otherwise you'll be in the same situation as my friend, please evaluate if you want to be doing what you're doing for the rest of your life.

Your GF is just manja, people with mental disorders are different from your experience.

Wait till you married your GF, maybe you're the next poster here asking for help.

She hanged.

He himself almost suicide with her the moment he saw her if not for a phone call to his family.