The Accident.

Amy and Ty were happy, there wedding was in 4 Months.
Amy was 22 and Ty was 24 who was now a certified Vet.
Lilly was over for a visit and Amy was spending some quality time with her. Amy had worked hard to get mother and Son back together, using her own life altering Accident with her Mum , yes they were close, but how would Ty feel if she died before they'd made peace. Thankfully it worked and even Wade was making an effort now.
They'd been to Calgary looking for anything to do with weddings and if there was anything they may need for her and Ty's Wedding day.
Amy saw a message from Ty saying he was out on some calls and couldn't meet them for Lunch but would see them both at Heartland for Dinner.
They set off home and Lilly borrows Amy's phone.
While Lillys talking to Lou, Val Stantons Truck arrives at the end of the Driveway of Briars Ridge," WATCH OUT YOU FOOL".
Lou's still talking to Lilly when she hears it.
Lilly SCREAMS, Then she hears Amy SCREAM.
Then an almighty crash of metal and the phone goes dead.