As per your query,your daughter got operated for Appendicular perforation.Appendix got perforated and lead to peritonitis
.After Appendicectomy,her abdominal cavity has to be washed with Normal saline to clean the peritoneal collection.Then,a drain has to kept from inside to drain the collected fluid outside.If the drain is not kept,fluid that is collected inside will get infected or pus might not be drained completely.
So,because of the infection inside,there is pain,vomiting and fever.As she is having distension in right lower quadrant ,there will be some collection at the right lower quadrant or lower abdomen.There will be mucus in stools due to rectal irritation by the pelvic collection.
Adhesions after surgery will lead to abdominal distension,vomiting and constipation
Irritable bowel syndrome
does not fit here.
Consult your Surgeon immediately and get a Plain x ray abdomen in erect posture to rule out intestinal obstruction
due to adhesions and Ultrasound
abdomen to rule out any Collection inside abdominal cavity.
Proceed as per the reports.
Wish her speedy recovery.
If you come back with above reports,i will clarify further.