#1
Episode 8 part 1 and 2 - The Winds...by Etherealchaoss
In this episode, they all deal with knowing they have a sister they didn't know anything about for 24 years.
#2
Episode 9 - The Fourth Halliwellby Etherealchaoss
In this expansion, the girls have learned that Paige is their sister, and they discuss how they should proceed.