Is It Safe To Have Cefdiel And Metaspray For GERD Problem?

hello doctor my daughter is 16 months old, she got infected ear infection 2times first in june and now again both time doctor prescribed Augmentin but after ten days dr said she has still that infection so now consult with ent specilist we visited there and he said she is suffring Gerd problem and he prescibed cefdiel ?(cefdimin)6ml once daily for 10 days and metaspray nasl spray once daily each side for 30 days and histac efforvencent tablet 1/4 twice my daughter weight is eleven and half kg.i just want to know is this a right treatment for this, and how ear infected with this.