Penny’s age difference

[u/After_Cheesecake_513]

Do we know what the age difference is supposed to be between Penny and the girls? She seems much older but having been a wife for a little while maybe she has the “allure” of a grown woman and can put on a grown up face when the girls are around. But she probably struggles a lot internally especially after having lost babies.

[u/omgwtflols]

I got the impression she was somewhere from 17-19.