You are in a boot loop try resetting it , also if that doesnt work go to recovery mode wipe the case and factory :D
Note:- try removing battery or restart several times if that doesnt work go for above mentioned procedure :D
Use tenorshare data recovery tool by connecting your phone to pc and starting the program you will surely get all the things back i have done it myself :D
For the work she need to do the upcoming Galaxy tab 10.1 pro would be the best option moreover as she is a multitasker the SGT10.1 pro will handle most off the work its better than iPad air see the reviews on youtube u will definitely like it :D