So, you want to grow banana indoor.
This is topic for me
First, you must put her in a sunny room that has a lot of oxygen. It's a bit problem if you have moist in your room. You can easily cut her leafes if they bother you. During winter she will once or twice open new leaf, but very rare and slow. Mine bananas have opened only one leaf. That's good winter growing for me
Keep container moist, but not too much, you can control it by your finger.
So that's my advice, I'll be glad if I helped !