How come Alexander and Eliza's adopted daughter wasn't at least mentioned?

For those who don't know, in 1787, Alexander and Eliza adopted an orphan named Frances "Fanny" Antill, who was the daughter of a Revolutionary War colonel who was good friends with the Hamiltons. I feel like she (and the other Hamilkids) should've at least gotten a mention in the musical instead of just Angelica (the daughter, not the Schuyler Sister).