My thoughts and prayers go out to Michelle's family, her wife Krista and their child,' said O'Donnell in a statement.
Rounds had never publicly revealed that she remarried or had a child, with O'Donnell using he statement to break that news.
The couple began dating in 2011 and were married in June of the following year before splitting in 2014 and divorcing two years later.
It was just a few months after their private ceremony back in 2012 that the couple adopted their daughter Dakota, who is now 4 and lives with O'Donnell.
The mother-of-five admitted that she at first resisted the idea of dating but eventually gave in, a decision that worked out well given how happy she sounded while speaking about 'Rooney.'Rosie revealed her name while answering questions on her personal website, saying she calls her new girlfriend 'Roon' after she began posting photos of the Boston beauty on her social media accounts.