Hi and welcome to Binky Bunny! It’s great that you adopted an older bunny. Have you clicked on the BUNNY INFO link at the top of the page? It has a lot of great info on all the basics of rabbit care. There you will see what fruits can be given as treats (only small quantities, due to the sugar content). Some people give their rabbits treats from the store, such as Oxbow Simple Rewards Baked Treats.  They come in a few different flavors.  If she has never had any greens, go slowly with those, only trying one new one at a time, then trying a different one in a few days. Bunnies like soft things to sleep on. Fleece blankets are good, and are better than towels if a rabbit happens to chew on them a little. If she is a bad chewer, you may not want to give her any blankets at all. Rabbits like a hidey box in their pens, if there is room. You could attach an x-pen to her kennel to give her more room when you aren’t there. Be sure to get a tall enough pen, at least 36″ high, so that she can’t jump out. Some rabbits like toys and others don’t care to play with them that much. It’s kind of trial and error. You could toss in some paper towel tubes, ones without glue for her to toss and chew on.

Congrats on your new bunny! Sounds like she is going to have a wonderful life with you.

Agree with Tobyluv, The Bunny Info section here on BB is a great place to start.

Do you know if she is spayed? Most shelters only adopt out spayed bunnies but not all.