Thanks all for the great advice--like I said earlier, y'all are the ultimate authority that I go by. Based on what y'all have said, I'm not going to bolus--I am going to look into the high-frequency (starting small) feeds overnight.

Mom age 84 dx stage IV papillary cancer mandible 10/10; non-smoker, drinker, HPV-. Surgery 2/16/2011; mandibulectomy. 0 pos lymph nodes, has been in long-term hospital since March 2011. Returned home 8/11, permanent PEG tube.