She said: “The reason I didn’t do it was I was in a hotel room and I couldn’t get the windows open.”
“And there are days now where when it’s a beautiful sunny day and I’m walking the dog or my daughter looks at me and says something funny, and inside I say a little prayer and I say thank you God for not letting those windows open.”
Andrea, who is married to third husband Nick Feeney, and is mum to Finlay, 18, and Amy, 13, continued: “There’s shame, there’s guilt for even having got to that point.
“But I feel that at moment something else was in control and I was meant to still see beautiful days.”
Andrea’s book This Girl Is On Fire is published on September 29.
For confidential support call the Samaritans in the UK on 116 123 or visit a local Samaritans branch.