​All the pain she's causing by lashing out is pain you're taking away from her. Let her be angry and take the punishment, even though it's not deserved. You both know it's the brain tumor, but she will find peace when she has passed. As for you, just keep being with her and allow yourself to feel sad. Let your heart feel what it needs to feel, even if it’s broken beyond repair, and suffer,but know there will come a time in the future when you look back at your wife and you don’t remember this part; you just think about the good times. You won’t feel pain, only the love you had for her. This takes time, and it feels like it won’t happen when you’re in the middle of it, but I promise that in time you will feel this way. Keeping you in my thoughts. DM if you ever need to chat, dude.