Attacked Kitten

Earlier we've been woken up by our kittens meowing only to found out that she was injured, she's 4 weeks or 5 weeks old and is wobbly and weak, we also found that our 2 other kittens were gone, dead. We saw one under our car, beaten to death, the other one gone and couldnt be found. Now the mother cat won't tend to the last living kitten, was trying to put her inside their box but she seems to panic inside, the mother is a stray who stayed with us for almost a year now, they live in our garage. Will mama cat stay like that or I don't know since she was very protective and passionate with her kittens before the attack happened. The other kitten looks very weak

Have you taken the kitten to the vet?? This needs to be done ASAP. Also, you need to get some kitten replacement milk (KMR) or some goat's milk and start feeding the kitten yourself if you have not already done so. The baby needs to eat every 4-5 hrs. You can also try the kitten on some pâté style canned food.

As for whether or not the mom will start taking care if the kitten...I don't know/can't answer that. Top priority should be making sure the kitten is ok and is eating.

I would NOT leave the kitten in the garbage. Make sure it stays in the house with you. If you can bring the mom in, all the better. You can isolate both in a bedroom or a bathroom. If you cannot get the mom inside, best to hand raise the kitten from this point forward.

Yeah it's in the house already thank you!

Hopefully you have taken the kitten to the vet.  Also you will need to get the mom spayed or she will just keep reproducing. 

I hope the little kitten is ok.

Take the kitten to the vet asap!