all my cats in the past and right now make "biscuits" or "knead bread" whatever you want to call it. Some suck on things too like blankets or clothing. My RB Mytsi right up until she got ill used to make "biscuits" and suck on the blanket when she was settling in for a nap. I don't know if it comes from being weened too early or not. I got Mytsi when she was 8 weeks old and she still did it. Now I have Vixen whom I got when she was 5 weeks old she still does the biscuit making but she doesn't suck on things. She was weened earlier and doesn't do it. I think maybe it's just the way some cats get settled. Don't be annoyed with her she is just being loving.