I don’t think you are doing anything wrong, but in general, it’s better to let the bunny come to you and explore you without you trying to touch it. You can lie on the floor and let the bunny use you as a jungle-gym. Also see to it that you have some really appetizing treats around so you can reward every attempt att approaching you – it’s important that she associates you with good things. Like a craisin, a raisin, a small piece of banana etc.
Some bunnies need more time before they feel comfortable in a new space than other bunnies. 4 days is in my opinion virtually nothing =) You can make her a hidey-house of a cardboard box that you cut entrance and exit-holes in. Bunnies often like a place that has a roof and if she knows she has a hidey-house to run and hide in, she may feel braver and be more eager to explore.
With the litter-box training I think you are doing it by the book. She may be eager to apply her scent to everything in her new territory. She’s probably a bit stressed out now, since everything is new to her. Is she spayed?