Eating to fast can cause problems because they do tend to suck down air too. You can try puting a couple of large rocks in her bowl (make she they are larger then she can swallow so she doesn't eat them). She will have to eat around the rocks which will make her slow down.
You can also try feeding her out of a kong. I will just fill up a kong with Sophie's food and give it to her. She will then roll it around on the ground and eat what ever comes out. This way the food is not all there at once, she has to work at getting it out (good for keeping her occupied) and she will probably chew her food better.