Based on her weight, she should be on reduced, timothy-hay based pellets now. It’s 1/4 cup per 2lbs, so however heavy she is, convert from there.

For veggies, 1 cup per 2lbs is fine as well. Veggies don’t really add too much weight. Personally, I just eye-ball it to fit on a small plate, haha. Wick definitely gets more than a cup and he isn’t 2lbs, but his weight has been fine.

Once she’s fully recovered from the spay, you shouldn’t see it as “testing out” the peeing situation— very few rabbits magically adopt a human-created litter box. You’ll need to retrain her. So each time she pees on bedding, move her to the litter box immediately and clean up the mess. It takes persistence.

Activity/exercise is really important for weight, so giving pellets in the form of a pellet ball (http://www.instagram.com/p/BiHosnDAwMo/?taken-by=wick_theboogeyman) or scattered will increase activity.

Hello there and welcome to the forum. I’m in the boat of less is more when it comes to pellets. Especially concerning giant breeds since even the smallest bit of extra weight is so much extra strain on the joints etc. My pair of rabbits (5.5 pounds and 7 pounds in weight) share just 1 tablespoon of pellets per day between them. They eat plenty of hay and share a large salad in the evening. For a giant breed I’d look at feeding 1/4 cup of pellets per day, but no more than 1/2 a cup daily.

Greens are harder to guage the amount. In one evening my pair might get to share 2 leaves of cos/romaine lettuce, 1 kale leaf, 1 or 2 silverbeet leaves, 2 radicchio leaves, 3 dandelion leaves, 2 calendula leaves, a 2inch piece of fennel, a calendula flower and a handful of fresh grass. If you’re only just introducing leafy greens you are best off to introduce one green at a time in small amounts to avoid gut upsets.

Unfortunately many rabbits like to pee on soft things, and I’m afraid I don’t have any good advice for getting her to stop peeing on your cushions etc. She may calm down with this behaviour once she settles more from her spay. Be sure to thoroughly wash what you can to remove her scent as much as possible to prevent her doing it again.