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Shayna Conway, formerly from Charlottetown, is expected to survive her injuries. (CBC)

The sole survivor of a murder-suicide on an Alberta highway has spinal cord damage but it's too early to tell how severe it is, her sister said following surgery that she says went well.

Shayna Conway of P.E.I. underwent surgery Monday in Calgary, and doctors are optimistic about the 21-year-old's recovery, Courtney Crosby said on her Facebook page late in the day.

A close friend of Conway said she was shot three times — in the abdomen, the thigh and shoulder — and that the worst-case scenario for the spinal cord damage was loss of feeling in the left fingertips.

Four others died in the roadside murder-suicide outside Claresholm, near Lethbridge.

Crosby also said Conway will soon be able to go home.

Support for victims' families

Credit Unions across Prince Edward Island will begin accepting donations Tuesday in memory of two of the shooting victims: Mitch MacLean and Tanner Craswell, both of Charlottetown.

The two friends were heading home for Christmas, being driven to the airport by Conway and another friend, Tabitha Stepple. En route, Stepple, MacLean and Craswell were shot and killed by Derek Jensen, Stepple's ex-boyfriend. Jensen killed himself after the shootings.

MacLean and Craswell were avid baseball players, and played last season with the Lethbridge Bulls.

The Bulls have announced they will not use the numbers 6 or 13 next season in honour of the two.

One set of the MacLean and Craswell jerseys will be framed and displayed in the team's clubhouse.

Another set will come to P.E.I. with Bulls players who are attending the funerals this week. The jerseys will be presented to the families.

MacLean's funeral will be at Winsloe United Church in Charlottetown on Thursday at 10 a.m. local time. Craswell's funeral is Friday at Holy Redeemer Catholic Church, also in Charlottetown at 10 a.m.

Stepple's funeral is on Wednesday at 1:00 p.m. MT at the Evangelical Free Church in Lethbridge.