Despite being a member of the Spice Girls, the 38-year-old says she used to be shy but three-year-old Scarlett inspired her to overcome her issues, reported Contactmusic.
"I never expected the changes that came with being a mum. One of my overwhelming feelings was that I had to make Scarlett proud of me. This made me brave in areas where before I'd been shy," she said.
Chisholm, who is to star opposite Ben Forster in a new touring version of the musical 'Jesus Christ Superstar' starting this month, said that the best part of her day is having breakfast with Scarlett and she much prefers to be at home with her than out.
"Now I enjoy the feeling of being settled at home with her. My favorite part of the day is having breakfast with her. Scarlett astounds me with her maturity. She'll give me a cuddle and say, 'Are you OK, mummy?'," she added.
Chisholm recently split from Scarlett's father Thomas Starr after 10 years of being a couple.