Originally Posted by
hunter_peterson
They haven't mentioned a daughter yet, but I think most people are expecting her to have one. And really, Ant-Man could use Cassie's presence to help differentiate him even further from the other MCU heroes. At the moment, only Drax is a father, and he thinks his daughter is dead. So a single father is a unique position right now.
I think they probably are going to work her into the movie, but the silence is weird. They probably don't want to spur speculation of a Young Avengers movie yet. (Which, off topic, if it where to happen really should be the classic lineup with the addition of Kamala Khan, who fits in perfectly with that team.)