I straighten and walk over to where my Mum and Stella are snarling at each other.
"Stella. How you know my Dad?"I ask. 

She sighs.

"We went to school together. We were best friends until-" she jerks her head at Mum "- came along and ruined everything."
"I did not!" Mum protests.
"Shut up!" Stella snarls.
"Anyway me and Mike were abseiling,"
"What's abseiling?" I ask.
"It's a sport." Mum says.
"When Bianca walked along, she distracted Mike, and-" she swallows" and I fell to my death."