Personally I want her to get a foot sheered off from stumbling on the catwalk during one of her waddles. You know how normal people might sprain an ankle if they land on it the wrong way? Extremely fat people like Dumpster are at risk of just snapping the whole thing off because physics are a fucking bitch like that. Just have her stumble while trying to trot on heels in addition to her hooves, and self-amputate.