Mamma Guilt

Why is it that moms carry the weight of everything that goes wrong?  I am having a terrible feeling about leaving Callie at the airport this morning and so helpless that I can't help her get on to Hawaii for her spring break.
Let me start from the beginning.
Callie had a 6:10 AM flight to Hawaii this morning on US Airways. We were running just barely on time and hit construction and a detour. Still got her there with 40 minutes. She goes inside to check in and they won't even take her at the counter. They have a rule about being 45 minutes or so before flight time or you can't even check in.
Get this,..even with this delay, checking bags and getting a standby ticket, she STILL made it through security in time to board that flight, had they let her. But no, she has to wait and is told that all remaining flights are full. She was on standby for an 8:00 flight but it was a no go. She got standby for a 12:15 flight and just called to let me know she's on. This flight goes to Phoenix and she will take her chances from there to get on into Honolulu.
Her fiance', who booked the flight originally, is bound and determined to get her out to Hawaii for a week, so I feel like they will work it out even if it means a night in the Phoenix airport.
I am feeling terrible about this. She doesn't blame me for missing the flight but I feel responsible. She knows she should've gotten up earlier and been proactive about being at the airport early but once again, I have mom guilt. It is making me almost physically ill.  I can't help her and I need to let her be an adult (she is 20 years old, after all) but this is hard!
Anyone else know about helpless, guilty mom syndrome? 
I'm waiting around in the Dallas/Ft. Worth area and postponing my trip to central Texas until I know she doen't need me to get her at the airport. I'm  little stressed!!!