ConcreteUnderpants
This was it
www.lifestyle.com.au/tv/the-truth-about-size-zero/
(more on YouTube if you google "size zero" and Louise Redknapp)
She tried to get down to size zero in 30 days notionally to expose the dangers of crash dieting but very obviously in reality for other reasons.
I've got limited sympathy here about the claimed Stepford Wife situation - not least because she had a career when they married (Eternal were a pretty big band at one point) and it's a choice to give it up. It's not something forced on her by culture or opressive parents or family.
Fine if she realises she misses fame and performing - but to blame it on your husband and family is a bit rank and failing to take responsiblity for your own life choices. She's done lots of other bits of tv presenting so this can't be a total shock.