How can I help my dog?

So we have this gate to block the laundry room door so my dog can stay inside but not go into other rooms. Sometimes she breaks it down, so we have a back up one. My sister for got to put it up though and she got into the pantry and ate (and I’m not kidding) 3 loaves of bread. What can I do to help her feel better? I’m she is drinking water is it may get flushed out but anything else please?