Don't feel guilty, it's perfectly normal to feel this way. You love all of your babies and it's okay to feel closer to one over the others, it's unavoidable

Sometimes they just touch your heart just a tiny bit more than the others, and that doesn't mean that you love the others less, just in a different way.
Luna is my heart and soul. We nursed her to health and spent many hours caring for her, feeding her every 2 hours at first. She needed us so much, and she's still a clingy cuddle bug, she will whine if you don't pick her up

Izzy is our little comedian and athletic one

She makes us laugh so much, and we love her tons, but she's not as cuddly and needy.