A friend of mine was feeding a cat outside and got it in the house because its winter and freezing its really friendly and it looks like there is milk its like a fatty think near her nipples it felt nothing like kittens inside her can anyone suggest what it is or what to do? I thought maybe the cat had kittens or maybe its going to my cats never had the lumps though near the nipples please help me out thank you

Your friend did a great thing by saving her from the winter!

She should be checked out by a vet. This would be the case even if you didn't find anything unusual. It's what's best for the cat and safest for you.