I tried to really pay attention to it last night and I think the problem is more her inability to feed and go right back to sleep. The feeding takes about 25 min, same as during the day, add about 5 minutes of burping. That leaves almost an hour it takes her to go back to sleep.
Last night, was better, I did the shh/pat and she was asleep within 25 minutes. AND, the gas pains were much less. Funny thing is, typically I take frequent breaks when nursing to burp her and last night I did not, and the gas was much less.
I guess I thought that a night feeding would be feed and put back to bed without such a big production of getting back to sleep.