They are actually going to want her to lose weight right now. They want her to get rid of the fluid accumulation in her lungs. So, don't be alarmed if she loses a little more weight.
She probably still has a little more time of weaning if she's still on 2 liters at 30%. She needs to be able to get down to 21% before they can drop her to a liter and then sometimes they just come off it all together and sometimes you have to wean them down to a half a liter...lol.
You tell Hannah to keep going in the right direction. And tell her it's okay to give the nurses a little heck every once in a while.