Hi Ken,
I can understand what you're going through. Given more time, hopefully she'll calm down - she just worries about the man she loves. I go through the same thing daily with my 14 year old daughter. It's always been her and I against the world and our world experienced a life altering change 18 months ago. If I don't answer the phone during the day she goes into panic mode at school. Even when she's home she's on guard. Although she'll moan, groan, and generally act like a teen when there are extra chores to do, she has said many times that she honestly feels my stroke was the best thing to happen to us - now I'm always around and not away from home working long hours. (I was working in Social Services prestroke).
So...hang in there...give her ime and as much reassurance as you can.