The only "trauma" I think really think of is how this year has done a number on her, her grandma that she was close to died in pakistan and she was here in the states, and then just as her entire family was beginning to recover from the death, her dad was hospitalized and they determined he had cancer. Its completely possible that ur right and because of the rishta process, which seriously seems like a process for choosing a bakra versus a wife, is why she's upset.
That's probably it right there. Your friend's story is a lot like mine - except for the Katrina Kaif part...I wish! ;)
I lost two people in one year when I was around your friend's age. People I thought were friends to me and my family showed their true colors, and those colors weren't pretty. My mother was inconsolable and I felt like a massive weight was crushing me. I had a ton of responsibilities suddenly thrust on me and didn't even have time to cry, though I wanted to badly. And on top of that, I had to put up with some massive idiocy in the form of rishtas coming from people who clearly had no idea how to act with tact and wouldn't know courteous behavior if it bit them in the you know where. If I dared have an off day and acted grumpy and temperamental, heaven help me because how dare I inconvenience others? So I had to paste a smile on my face and act "fine" so others wouldn't feel uncomfortable. And then I met this man...that is, Allah blessed me with him. And the rest, as they say, is history.
She will get through this, Inshallah. Talk to her, support her, and keep going back for round 2 even if she has her bad days (and she will). If she makes an excuse as to why she can't go to Starbucks, let it go and come back to fight another day...this time perhaps with an offer of a healthier Starbucks drink (something with soy milk or lowfat milk perhaps)? And whoever her "one" is...he's on his way. Promise. All she has to do in the meantime is continue living her life in a healthy and positive way.