I took a cat with unhandled kittens at 6-7 weeks. The mother was very tame so that was a bonus. The kittens were wild. Never handled. Given time and lots of handling for food ( feeding by hand rather than in a bowl several times a day ) by myself and two young sons, two of them were reasonably tame but one was more standoffish and hissy. A friend took it and continued keeping in a cage and hand feeding and gentle handling. Within a couple of months he was the friendliest fella known. To the point where when children came, as she was a childminder, he would push his way through the parents for attention.
I was originally told I was mad thinking he could be a house cat but with strict confinement and handling and feeding for a few weeks it really brings their confidence on as long as the right people take them who have patience and a gentle approach.
The kittens are young, they will do well
once mum is speed she should be more appealing for somebody. Better than them fending in the wild for food in winters like last year.