Try not to read anything into it. It doesn't necessarily mean anything. Perhaps she didn't want to be coughing up green stuff around OM. You don't want to be disappointed by reading anything into this.
Instead continue to work on your own PMA, distancing, allowing her the space to figure herself out, friendly and nice (I like that you are saying kind things like, "Hope you feel better," etc... Keep that up... if she says anything nasty ignore it, look at your watch and maybe say, "Well... ooooh, time to go. I'm suppose to be somewhere in 20 minuets. See ya later!")
Always stay on the "high road" and be the "better person" and you won't have regrets. STAY CALM! Consider your wife mentally deranged at this time and don't take anything personal. On a personal note, in the past I was always reacting and defending myself against negative remarks or attacks. I'm kind of proud of myself to have learned the self-control to realize inside, whatever is being hurled at me is a bunch of malarky and I don't NEED to react to it. Escalating the situation doesn't help me one bit.
>>I don't know what to think or what I feel.<<
Think about yourself, think about your kids, and feel good you are alive one more day.
There is no arriving, ever. It is all a continual becoming.