It will take some time to get over that "strange/numb" feeling. After all, your emotions were on "very high" alert for quite some time and now that it is over a done with...your body needs to readjust and calm itself down.
I think it's great that her parents have reached out to you. They probably do not understand everything that went down, but they are very much aware that their daughter went a bit over the top emotionally and has done quite a few things that were not normal for her. I would enjoy my time w/the parents, but try not to share too much of what went down between the two of you.
As for her apologizing, well, she may or may not do so. They tend to apologize in a half @ss way and sometimes it does not sound sincere. You will not get the closure that you are looking for from her, but you will find closure in your own time as you forgive her along the way. When the money runs out, she'll be back trying to play the victim and poor me card to get more from you and do not be surprised if she uses the kids as the main reason for needing additional fund.
I hope that you and the kids enjoy your short trip. All of you need this time to unwind and just relax.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
