You can get fresh ginger root in any grocery store - just peel it with a veggie peeler (it has brown papery skin covering the fleshy meat inside). Then just feed a tiny piece and should settle stomach. If she doesn't take it fresh then hide it in a piece of cheese or something she likes.
Heck - no - I am a pretty fast walker - so she gets tumbled around in that carrier of hers when I'm on a shopping mission.