NiceCupOfTea said...
Naina may have IBS, but right now she has severe IBD which may turn fulminant if not treated. She sounds like she is on the verge of needing emergency treatment: IBS is irrelevant in this context.
That's why I suggested she get a second opinion in my first response.
Her current GI has given her two choices. She can either choose one of those or get a second GI's review of her situation.