Chubby

We've been taking care of our neighbor's cat, Chubby, while they are away. Lolo loves Chubby and the feeling appears to be mutual. She's quite pleased that when we open the door, Chubby seems to be waiting for her. Usually, Lolo and I go over to feed and visit with Chubs. Chubby will come over to Lolo, rub against her, and purr contently.
Norah's been over a couple of times. She loves Chubby too; however, the feeling is not mutual. Chubby sees Norah and takes off in the opposite direction. I'm not sure what it is about Norah and animals. She loves animals so much, but they don't want to reciprocate. Chubby doesn't purr around Norah.