Well, there's bad news and good news.

Good news... The kittens are now familiar with me and come alot to me. But, I still can't touch them

Unhappy news... Well, the mother doesn't visit much, I haven't seen her since a long time. But, she does leave some stuff so, I know she's been here.
Let's start with rats.... She leaves them there in the garden I feel sick when I see them dead upside down...

Bad news... One of the kittens probably tried eating it, the rat's head wasn't there. And I put a basket on it, so they would not be able to reach it. One kitten came and sniffed the basket. well, one of the kittens, I saw it puking on the grass I don't know, maybe it ate the rat that's why. It left something green on the grass. and was later making weird noises and trying to vomit. When I put milk for them, the other two kittens were drinking it, but, this kitten came, took a sip and then went and sat down and was looking here and there. It doesn't not seem well to me,

Please tell what i should do, and please pray this little one heals quickly.