Don't worry. It is not likely mum would reject them from being touched by a person (scent) she knows.

I delivered the last kittens I have here. Their mum was tossed out very young as she gave birth at around 8 months old. She didn't have a clue. When the first kitten started to 'exit' the body she went nuts, growling, trying to tear it out with her teeth, trying to run from it. I had to force her down onto a blanket and I was literally like a midwife with her. When the kitten was pushed out she didn't know what to do. I had to break the sac & cut the cord then place the baby with mum so she could clean him & he could feed. I did this 3 more times so all her kittens were handled from the second they were born and she never ever rejected any of them.

It is really only within the first days or even week mum is so inclined to be extra protective. Start handling now. What Karen said is good advice. Stroke Phoenix while mum is there and even include her in the petting session. Frequent petting sessions are great. If you are nervous still carry out your petting sessions while she is still snug with mum or on her blankie. You can start in a week or so, once you see mum & Phoenix & of course you are more comfortable, to pick her up for cuddles.