A good "starter food" for bunnies weaned a bit on the young side is rolled oats (like you use to make oatmeal). Since that is also a food that a lot of breeders recommend for rabbits that are experiencing loose stools, it might help firm things up a bit. All you have to do is mix a bit of dry, rolled oats in with the pellets.
It's possible that this rabbit has some chronic health issue causing what you are seeing, but for now, I'm going to assume that it's just a bunny that is having a little bit of trouble adjusting to all the changes in her young life. Poop sticking to her isn't 'normal,' but if it doesn't get any worse, and clears up in time, it sounds like something to just keep an eye on for now.
It's possible that this rabbit has some chronic health issue causing what you are seeing, but for now, I'm going to assume that it's just a bunny that is having a little bit of trouble adjusting to all the changes in her young life. Poop sticking to her isn't 'normal,' but if it doesn't get any worse, and clears up in time, it sounds like something to just keep an eye on for now.