Karenna, 36, and Andrew "Drew" Schiff, 44, "have been separated for a couple of months and in marriage counseling," a friend of the couple told People.
It's reported the Gores have gone to New York to help their daughter during this difficult time. The Schiffs have three small children: Wyatt, 10; Anna, 8; and Oscar, 3.
Karenna is currently collaborating on a documentary about inspirational women in history and volunteering at a legal aid clinic for domestic violence victims. "But mostly, she's being a mom," said the Gore friend.