Breastsroke technique of my 11 year old daughter.Any tips??

Hello, my daughter is 11 years old and she has been swimming for 3 years now.She prefers competing in breaststroke and her recent timing is as follows: 50m - 46.31 sec 100m - 1min 39 sec 200m - 2min 29 sec A new coach came to our club 6 months ago and altered her technique, so she is now a little confused and hasn't since improved her times. I am looking for some feedback on her stroke.So i am linking two clips of her racing the 200m and the 50m both in lane 8 (closer to the camera). Any help is welcomed !!! https://youtu.be/CAh0lSycm7Q