Hi there, welcome!
Can you describe her full diet and housing situation in detail? It’s likely she is filling up on “junk food” and not wanting to eat her hay for that reason. She really shouldn’t be in contact with chicken feed because that could make her sick and overweight over time. The rabbit digestive tract works best with lots and lots of fiber, so too many starches, sugars, or proteins can upset things.
Fruit really isn’t part of a healthy rabbit diet, so I would cut the fruit out entirely. Veggies should also be introduced really slowly, and are only a small part of the diet. How many veggies are you feeding per day? If she’s eating a lot of wild forage she may not need veggies at all. It’s also important to make sure the weeds she has access to are safe for her to eat. Domestic rabbits don’t have the “street smarts” that wild rabbits do so they don’t know what’s safe to eat and what’s not.
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The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.