What bag is she using? After my operation I used Hollister but they broke twice on me. Actually, ripped at the seams! I have been using the Sensura Coloplast ones for the last several months. For the life of me, I have no idea why they even put filters on them because the poop gets on the filter almost immediately.
For odor control I find the 3% hydrogen peroxide works the best. I place about a capful in my bag after rinsing it out with just water. Sometimes I use the Adapt or M9 drops. I don't really measure the drops, just squirt some in.