This thread is a prime example of why in another post I said that not enough doctors know how to care for ostomy patients.
It sounds like he is confusing it for a colostomy and not an ileostomy.
An ileostomy (especially if a pt has active Crohn's) will lose electrolytes.
Btw, if she is on sodium tabs how is her potassium? Hydration will also need to be monitored.