I am sorry about your MIL's stroke, I hope she can lead a normal life in the future.
EM, don't beat yourself up about what you should have done. Do you really expect yourself to "pitch a perfect game". Each time you make a decision you analyze the facts, weigh the possibilities and make a decision. You have to have faith in yourself that you'll make the best choice. Tonight it was a scary emotional moment for you and your wife. Do you think she was thinking straight? Her mind was probably racing from thought to thought. One second she could wish you were there and the next be glad your gone. If she not sure, it's unclear and your choice was logical.
Get some rest, if MIL's condition worsens you may have a lot more family responsibilities for days or weeks. Good Luck
