Probably it's better for her, if you could do a spell for healing a heart? It's kind of not so nice to force someone back to someone else, when both are probably not meant for each other and he is actually some kind of asshole who will just hurt her all the time, even when he is totally in love. So this could do a lot of harm and no responsible Magician or Witch would help you there, so sorry.
But they would help you to ease her pain, to get over him, start a new life and probably even find finding a new love which suits her much better.
It's ok to look in the internet, but look in a serious internetcommunity like this one.