I would never find myself in that situation but no I wouldn't be thinking about my next trip - however, you don't know that SHE was thinking about such things either!
What do you think she was thinking? If your boyfriend told you he'd had his entire family murdered, would you not be a little bit worried about your own life? Would you continue to be alone with him? Of course you wouldn't.
I've tried to put myself in her place, I really have. I've tried to go back to when I was that age, and thought about what I would have done. I would have made excuses not to see him, I would have told someone, I would have not gone to the funerals, I would have been in a horrible state. She did none of those things, and she continued to go to places and do things which reminded her the whole time of what he did.