You should put Jr. back with her mom and siblings in general. They may not remember her but should accept her fairly quickly.
It is the best way for her to learn to play and socialize with other kittens, and to learn manners from mom.
You need to keep the kittens with mom for 12 weeks before re-homing them.
Kittens usually go to the vet for first vaccines at 8 weeks.
You can try putting Jr. in the carrier with the others. Have another container ready in case it doesn’t work out. Even if it doesn’t work, she should still re-join the family under your supervision.
It is the best way for her to learn to play and socialize with other kittens, and to learn manners from mom.
You need to keep the kittens with mom for 12 weeks before re-homing them.
Kittens usually go to the vet for first vaccines at 8 weeks.
You can try putting Jr. in the carrier with the others. Have another container ready in case it doesn’t work out. Even if it doesn’t work, she should still re-join the family under your supervision.