Perhaps something to consider.
If she is also getting radiation then perhaps she can get a PEG tube up front instead of a NG tube.

It would then be one less thing to worry about. (if she gets radiation as well)
Although I had a NG tube this was short lived (puked it out as soon as I woke up). Re PEG tube, once you get used to the idea of the thing it is not a big deal, feeding is easy:
syringe, pump or gravity feed. Just nothing really cold or warm for obvious reasons. Also you do not want to clog the tube with particles. That can be messy especially if you use a syringe. Some people are sensitive to the feeding rate (i.e. syringe). Keeping it clean, by rinsing with water after each use. (good idea anyway to get extra hydration)

M