Hi My Daughther Had A Segury, A Year Ago Shes

hi
my daughther had a segury, a year ago shes 14 years old a disc remover lumbar spinal
my question is is im so concern because she to depressed she was so different befeore the segury she 135 lbs
now she cryes a lot we do exercise but, eating healthy she said makes her more bigger, i dont know what to do.. I cry when she dont see me but i now she is suffering