ranger, she is 21. She won't call... Every 24 hours is amazing. This is not her, her age is it. She is young and free. She is on a vacation. I am so protective it is not funny. But you have to let go and let her fly. PTSD or not she is a good person right? She can't help how you feel, or her. I don't have kids that old. I am just about to hand over keys, no clue what it will be like when they are on their own. I am peterified over driving! But I see I need to relax. Let them live. My anxiety has bled over and I feel so bad. My 8 yo is upset and thinks accident or worse if I do not show up to pull him out of class for my doc appt. He is too young to worry but it rubs off. She will be silly and you will not hear from her, that is normal and good, and you are being normal being a parent. You just have a little extra stress with the PTSD. You cannot stop them from spreading their wings and expecting a call is unreasonable, it is being 21, not trying to be an ass (shhh, a secret they all are)