I'd probably not feed her at all of those NWs as what happens is that the continued feedings will just exacerbate the gas problem. Instead, I might look at how to reduce the gas -- are you nursing or formula feeding (sounds as if you're nursing but I hate to assume...). You might try another method of burping, something else to help -- with my LOs, my dh was the only one who could get them to actually burp when they were feeding at night. If I didn't get those good burps up, it was constant waking due to discomfort.