Baby momma overstepping boundaries

My fiancé has a son from a previous relationship. Today, the son came to visit for 2 weeks. My fiancé met his baby momma to get their son. He told me she asked him to have me text her pictures of our new baby. Last week she called him and suggested that we move to her state so she can play with our baby. I'm like wtf. I'm cordial with her but we ARE NOT FRIENDS. I am 7 years older than this girl. Maybe she is just still young and petty. Am I overracting?