As mentioned in other threads I have two resident cats and two foster kittens. The kittens are here about 2 and a half weeks and I fully introduced them after one week after doing the meet and greet through the door crack. After a few tentative days of being wary of each other they have all settled down. Over the past two days they seem to have really bonded. They have started using each others litter trays and just spotted Lola (resident cat) giving Geri (foster kitten) a good wash/groom. See pic attached. This pair seem to really have got close. I still separate them at night and in the morning they run to each other, nose rub, bum sniff and a few licks from Lola. The kittens are due to return to the shelter on Friday to be available for adoption but now I'm wondering if Lola is going to miss Geri. HELP. I have really fallen for Geri too but can't take the two kittens long term and as they are sisters I want them to have a chance at being adopted together. If Lola will miss Geri is there anything I can do to help her adjust.