We moved twice in 3 mths 2 years ago when DS was 1 and DD was 3 and it was fine. First thing I did in the both houses was to set up their rooms for them so that would feel it was home and their special place. We talked it up a lot before we moved as well to prepare them and I worried a lot but kids are a lot more resilient than we give them credit for at times, I am sure you will find she adjusts really well! Lots of visits to your mums will help too, you are lucky you are so close! Good luck!