Hi Josh
Thank you for supporting your wife so fabulously. I'm sure that it is appreciated even if not verbalised.
There has been lots of great info given above but I thought I would add my little bit as it has a bit of a different slant.
While I was in hospital I knew that I had some significant emotional issues to deal with but waited until I got home ~3 months later. I too would have melt downs, tanties & exhaustive crying fits that would last for hours. I felt frustrated, guilty, not brave, etc. I'd changed my husband's, son's & my lives forever & boy did I feel guilty.
I saw a psychologist I had seen before for depression (so I know I am pre-disposed) & he diagnosed PTSD. Basically there were quite a few events & thoughts that I wasn't processing normally & they would just go round & round in my head, getting worse with each trip The main treatment was EMDR & some counselling. I had no meds for this. The difference that it has made to my life has been tremendous. It has given me the emotional stability I needed, the strength to keep moving forward & to help others where I can.
My advice to all the strokees I visit at the hospital is that if you are getting stuck in an emotional rut, please get some help. You get help for your body, there is no shame in getting some help for your psyche - some things you just can't snap out of.
So please keep loving & supporting your wife & if you think she might benefit from some psychological help, please organise it.
HTH