The Sun on Sunday reported another source as saying the 39-year-old would never kill herself and that Brady later apologised for "creating unnecessary drama."
Two paramedics soon arrived at Flack's plush £1.5m (NZ$2.8) North London home on November 1 to check on her, but she assured them she was OK and no check up was required.
The source said that Caroline was 'mortified' and 'she hadn't taken an overdose and never would.'
They said she apologises profusely for her ex wasting emergency services time and added: "It was typical Andrew — he was creating unnecessary drama and made a drunken prank call."
The pair met back in January and got engaged in April. They have endured a strained relationship since with a string of high-profile bust ups.
The ex-Celebrity Big Brother contestant reportedly became abusive towards Flack after smuggling alcohol into a spa complex in Portugal.
Staff at the A-list haunt allegedly threw him out after fellow guests complained about ugly scenes.
The Apprentice flop also ruffled her feathers by spouting details of the break-up on social media when she had wanted to go about it privately.
Sources close to Flack said that a "fame hungry" Brady used her to "increase his status."
She was pictured in London this week with a coat seemingly tactically thrown over her hand, hiding her bare ring finger amid wild interest in her break up with Brady.
Despite recent turmoil, Caroline Flack is reportedly returning to Strictly Come Dancing this Christmas to take part in the annual festive edition of the series - having won the show in 2014.
She is said to have "jumped at the chance" to return to the BBC show.
Where to get help:
• Lifeline: 0800 543 354 (available 24/7)
• Suicide Crisis Helpline: 0508 828 865 (0508 TAUTOKO) (available 24/7)
• Youthline: 0800 376 633
• Kidsline: 0800 543 754 (available 24/7)
• Whatsup: 0800 942 8787 (1pm to 11pm)
• Depression helpline: 0800 111 757 (available 24/7)
• Rainbow Youth: (09) 376 4155
• Samaritans 0800 726 666
• If it is an emergency and you feel like you or someone else is at risk, call 111.