"We can talk to her daily and we have access to emailing her whenever we want. It definitely helps with coping [and] with missing her," Gia told Access Hollywood. "She always just said to me, 'Stay strong for mommy,' like, 'You'll see me soon.'"
Gia, her 3 sisters and their dad Joe had their first visit with Teresa this past weekend.
"She's doing amazing. I knew it was coming and I mean like my sisters are okay. They like obviously miss her dearly, but they're doing okay."
Gia also revealed that her dad Joe has been "amazing" and a "rock" since her parents were sentenced to jail.
Teresa began her 15 month prison sentence Jan. 5 while her husband will begin his 41-month sentence upon Teresa's completion.