Louise's emotions were in turmoil. “As our baby's life was starting inside me, Mark's life was coming to an end," she said.
Just two weeks after they celebrated Louise's pregnancy, Mark died in her arms.
“I told him that I loved him and that I'd tell our baby all about their daddy," she said.
Two days later, a scan showed Louise was carrying twins.
“At 27, I was a widow, but I had to be strong for my babies," said Louise. “I knew I'd always have part of Mark."
Lydia and Amelia were born in October 2003.
Stuart, a family friend, was a huge support. Three years after Mark's death, he and Louise became a couple.
“I felt guilty about moving on, but I know that's what Mark would have wanted," said Louise. “The girls called Stuart, Daddy and Mark was Daddy Mark."
Over the years, she kept thinking about the embryos they'd had frozen. “I agonised whether it was right to have Mark's baby six years after he'd died," said Louise. “There were Stuart's feelings to consider, too."
But he was supportive and reassured her that the baby would be part of their family.
“It felt right," said Louise.
She gave birth to Freddie and Emmeline in November 2009, with Stuart holding her hand. They got married in June 2012 and Myrtle completed their family.
Louise, who ran in last year's London Marathon for us in Mark's memory, now cherishes every day with her family.
“Stuart is the only father they've known, but I tell the twins all about Daddy Mark," she said.
“I feel blessed to have been loved by two very special men. Part of me will always love Mark, but now I love Stuart. He's my future – and I know Mark would give us his blessing."