The lone survivor of an Alberta murder-suicide says she's gradually recovering from the highway shooting that killed three of her friends.

Shayna Conway left a Calgary hospital on Saturday to attend a memorial service for Tabitha Stepple, Mitch MacLean and Tanner Craswell.

All three were shot to death last December by Stepple's ex-boyfriend, who then turned the gun on himself. Conway was shot three times but survived.

Sitting in Lethbridge's ENMAX Centre, Conway listened quietly as loved ones and supporters presented tributes to her three friends.

She didn't take the stage but opted to speak in a video message.

"For obvious reasons, it would have been difficult for me to get up in front of you today," she said in the recording, neck-brace visible.

In the video, Conway stressed how grateful she was for the support she and her friends have received from community members -- some of them strangers.

"I want you all to know that I'm doing well," she added. "I'm on the road to recovery and looking forward to getting home just as soon as I can."

Conway was admitted to an intensive care unit at a Calgary hospital after the shooting. By late December, friends said she was speaking and breathing on her own and able to move her leg.

During the memorial service, part of the slideshow presentation referred to Conway's survival as a miracle.

'Called up to the true major leagues'

In her message, Conway also extended her condolences to the victims' families saying her "thoughts and prayers are with you always."

More than 1,500 mourners attended the baseball-themed service which honoured the three young adults in videos, songs and shared stories.

A slideshow divided different sections of the service into nine "innings," each of which touched on part of the victims' lives, with presenters paying tribute to their childhoods and formative years.

Both MacLean, 20, and Craswell, 22, were baseball players from Prince Edward Island who had moved to Alberta to play baseball for Lethbridge College.

Friend and teammate Marc Clausen referred to their commitment to the sport a short presentation at the service.

"Tanner Craswell and Mitch MacLean have been called up to the true major leagues and will continue to turn magnificent double-plays in a much better place as true angels in the infield," he said.

Stepple was also honoured with loved ones praising her for her "genuine love for her family" and how she "lit up the room with her fun energy."

Last December, Stepple and Conway had been driving the Craswell and MacLean to the airport to catch a flight home to P.E.I. for the holidays.

Police said Derek Jensen, who had encountered into the group earlier in the night, rammed his car into theirs on the dark highway. The damaged car came to a stop and Jensen opened fire.

Police have referred to the incident as having a "domestic violence, jilted-boyfriend motive."