Angry Wife Help!

My wife seems to get angry very easily, things such as me forgetting things we talked about, or even when I tell her to stop gossiping or talking negatively about my family members will make lose control of her anger.

I admit I am forgetful but I do admit and apologize for forgetting, but I feel like it should not make her so angry that she needs to leave to go live at our other house all the time.

Example 1: During the morning, she told me she wants to bake for a friends bday and wants to pick up some supplies after work, at the same time my dad said he needs to get some stuff from the supermarket. I tell her that, dad needs to pick up some stuff so we will go together. A little later she talks about what she wants to bake and she's undecided. Later on at night, dad said he will go get the stuff himself, and I forget that the wife needs to pick up stuff as we drive past the supermarket on the way back from work. This is when she gets mad at me for forgetting and only remembering what my dad wanted to get. We could have easily made a u-turn and go back in but she already had her outburst. Its me not remembering her need only remembering my fathers, etc. Similar issues have happen regarding to me not remembering what she said or if I ask her questions regarding to things she said earlier.

In my view a simple reminder will solve the problem, no need for an outburst.

Example 2: When I tell her to stop talking about my family members, she says I'm not supportive of her and she needs to vent her frustration/anger (we have issues of sister in law not getting along with her), I do listen for a bit, but once she keeps repeating the same issues, I tell her to stop and say its enough. I say it nicely, but she becomes defensive, me of course gets annoys and my tone changes to an annoyed tone which results in her losing control because I am "not supportive" and can't put up with her complaints. Her complaints are also hurting my relationship with my family, but she always say she didn't start it, and this is hurting my relationship with my brother as we are no longer close due to the wives problems.

Whenever we argue she's the type that sits on the issue and cannot calm down, she cannot simply move on or let anything go. I try to be rationale and explain things to try to calm things down, but it always ends up being worse. Always me not being supportive of her views, etc etc. Our marriage is on the rocks due to arguments like this, she has been saying we should just divorce lately.

After the marriage, she always say she makes the most sacrifice by relocating to where I am, its always about her doing this and that for me. How I am the one that changed and I don't make any sacrifices.

I feel like these are small issues that she blows out of proportion and our marriage problems can easily be avoided if she just calms down and stop when I tell her to. I feel like the way she handles her anger is childish and can't talk it over nicely like an adult.

Any help would be much appreciated, I feel like we need counseling before there is no return.