My girls did this a number of times when they were tiny. All it took was adding a second litter box and some extra training and diligence on our part and it cleared up.
I don't even try to find all the rattley mice we bought over the past two years, anymore. Give them a tin foil ball or a twist tie and they have a grand old time.
Are they ALL like that??
OMG, doesn't that just bring tears to your eyes?? That poor little cutie, so badly injured ... still wants to play and has that glint in his eye!
Will to live?? I would say so!!
Aw, she's a beauty! My Mischief is similar in personality: hates to be picked up but loves to be petted and purrs like crazy.
I'll never understand how people can just leave animals behind like that, when they leave. Good of you to take her in. Are you planning to keep her or find her...