Her getting angry isn't necessarily a bad thing, and you don't know what's causing it. She might be very fearful if you are actually detaching a bit. To cover up her pain, or deal with the sadness, people often lash out. So maybe she's doing it b/c of that. I don't know, you don't know. But maybe. Either way it doesn't matter that much.
If she is copping an attitude with you, you don't need to stand for that. And you can say that. But don't say it over and over to where it's an argument every day. Would you let a woman you were just dating treat you like garbage? Deal with it the same way.
Don't get sucked into an argument. Would you argue with the store clerk who is acting like a turd? The disgruntled clerk is probably taking it out on the wrong people and for similar reasons as your W - they aren't happy with everything in their life and how it is going. So don't make it worse! Be the lighthouse.
H 34 W 29 BD 3/12/18 Divorce Busted Spring 19
It is not things that bother us, but the stories we tell ourselves about things.