The 'Queen of the Jungle' told of her horror when she found out that Kiki had been behind a door in a special trial.
Kiki was part of a task which saw Brooks and Eric Bristow faced with a choice of four doors, each concealing a prize.
Behind the yellow door, Brooks's daughter Kiki and Bristow's son James were waiting, but the actress and the darts legend picked the wrong door and lost the chance to see their loved ones.
Brooks admitted to The Sun: "I signed up for this show, but Kiki didn't. I didn't want her to be so upset. I had no idea this was happening. It was my lowest point.
"My mum gave the green light for her to be there because it was an opportunity for Kiki to see me - and I think she thought she would."
The EastEnders actress said: "I felt like I'd been kicked when I realised she had been behind that door.
"I felt so sad for both of us and I couldn't stop thinking about it afterwards.
"I kept picturing Kiki's face. She would have been excited about seeing me and nervous about being on the show - and then disappointed when we failed the task.
"Afterwards I went straight up and spoke to the show bosses. They said she 'had a moment', but assured me she was okay after they gave her a bowl of ice cream."
Brooks won the ITV show beating runner-up Ashley Roberts to be crowned 'Queen of the Jungle'.