In the midst of the relationship, Mrs Marshall said she was dragged across the floor by her hair and even had her head split open.
Despite thinking about ending her life she clawed her way back, but ended up crashing her car while trying to escape.
Marshall said that the abuse was "calculated", with the physical marks occurring "where it could be covered".
But she also credited her West Tigers husband as helping her recover emotionally, despite the "baggage" she brought to their relationship.
"Thank God I had someone like Benji who went, 'This is really full-on but I'm going to be patient with it'," she said.
The pair are set to become first-time parents next year, with the House of Wellness star telling Confidential she is eager to embrace motherhood but also get back to work.
"People are probably rolling their eyes right now going, 'She has no idea what's coming' and maybe I'll have a nervous breakdown," the brunette said.
"All of these things are options and I have a goal. If I can achieve it, great, if I can't, I won't do it."
In the meantime Marshall has been keeping busy trying to help other women through her fashion line Ruled By None.
The range, which includes T-shirts with slogans such as 'Don't Touch Me', was launched to "empower women".
Part of the proceeds from its sales go towards the charity 'Share The Dignity', which supports women who are victims of domestic violence and homelessness.
Where to get help:
If it is an emergency and you or someone you know is at risk, call 111.
• Women's Refuge: 0800 733 843
• Victim Support: 0800 842 846
• Lifeline: (09) 522 2999
• Family Violence Info Line: 0800 456 450
