So sorry to hear what your mother is going through! I had an ileus during my recovery - lots of nausea and vomiting green bile and had the NG put back in, but it passed after a few days and I was eating solids within a week. The surgery shocks your digestive system and can cause it to become temporarily paralysed. I was told to walk as much as possible to "wake up" my digestive system. Also, opioids can constipate you and make the problem worse, so only press the pain relief button when it's really needed. I think ileus is a reasonably common complication of this type of surgery so try not to worry too much, but if you are still concerned then keep pestering the doctors - that's what they are there for. Wishing your mother a speedy recovery!
Male, 33 @ dx, stage 1 RC (T1N0M0 0/29 LNs)
2016-02 - Cancerous polyp removed during colonscopy, 0.5 mm margin
2016-03 - ULAR & TME surgery, temp ileostomy
2016-04 - DVT, pulmonary embolism
2016-11 - Ileostomy reversal
2018-10 - Another DVT & PE