They are locked in their rooms because in their teenage years they want privacy and space. The speaker of “Hanging Fire” being that she is a teenager she would understand what teenagers go through and could give advice to her so she could do better as a mother. In lines 6-8 it says, “I pace the hall, hear whispers, a code I knew but can’t remember, mouthed by mouths I taught to speak.” as the mother passes through her teenagers rooms. The line “Years later the door opens. I see faces I once held, open as sunflowers in my hands. I see familiar skin now stretched on long bodies that move past me glowing almost like pearls.” means that then years pass and they are all grown up.
The advice that the speaker from “Teenagers” would give to the speaker of “Hanging Fire” would be to talk more to her mom. To share her experiences with her mom and ask her for advice when she needs it. In lines 12 and 13 it says, “I have to learn how to dance in time for the next party.” this line shows how she is a bit insecure about herself. She doesn’t necessarily need to know how to dance. She says,”Nobody even stops to think about my side of it.” In this line she says that nobody stops to think about her side of it but she doesn't talk to anybody about it she could talk to her mom but she chooses not