so im having trouble im a ftm and my family is trying to be in control of my five months old i have…

so im having trouble im a ftm and my family is trying to be in control of my five months old i have full custody of my daughter and im going to a babyshower with some of her dad side of the family my family dosent want my child to go if her dads there even tho he dosent help with child support. i still want him to see her any tips on how to tell my family to stay out of this ?