The much smaller and folorn-looking sister has injured her leg and is limping badly - warthogs are very dangerous adversaries. She's in no position to argue and she won't get a feed today. We were worried about how weak and thin she looked. What if her injury left her vulnerable to attack? We found out the next day though, that she had managed to get a good meal in the end, and immediately began to look stronger. That's how it is in the wild.