Naomi Watson was hired by Robert Harris to look after his wife Lisa and kid Molly But Lisa, who suffered from motor neurone disease, passed away age 41 in 2014 And months later, Naomi and Robert fell in love despite their 20-year age gap Naomi, from London, said she was branded a 'gold digger' for their romance The couple of six years, who live in Spain with Molly, 19, have gotten engaged