My girls (25, 19, 15, 8) and I went to Mexico for Christmas. DH died in March 2015,so I just wanted to have some happy memories for my girls for 2015. It was the absolute best decision for all of us. We went somewhere warm and did things at Christmastime that we had never done before. We had a great time exploring, relaxing, and just being together and not worrying about putting on appearances for anyone. I highly recommend it.
We did a girls trip in July, so 4 months out, with my mom, sister and nieces...that was just hard. We all felt like we needed to be"on" all the time and it ended up being stressful. We are going to do another girls trip next summer and we'll see if it's any better. For us, being able to just "be" no matter what that is at the time is very important and, sometimes, other people just don't understand that. Good luck!