Thank you for your thoughts.
Better news, just got the MRI results for my Mother, herniated disc. So there is that. Blocked artery was a real worry because she has heart trouble (she had a heart attack when she was 32, very worrisome)
Steve will be missed. He was not "family" (blood wise, he married in) but he fit in perfectly. He was the type of person that everybody immediately got along with. Had he survived the accident he probably would have been more worried about my Mother than his own health