Funeral arrangements are being made Monday for a 19-year-old reservist killed in a training exercise at CFB Petawawa.

"Always smiling, happy she'd always joke about everything. And her life, people knew her, they knew her laugh," said Bianca Dreyer, who remembered her fallen friend from her home in Guelph, Ont.

"She loved the cadets she's been doing it ever since I remember."

Waterloo native Arielle Keyes-Oliver died Saturday when a 5,000-pound truck carrying 10 reservists rolled during weekend training at CFB Petawawa. Four others were also seriously injured but are now in stable condition.

Keyes-Oliver was a first-year Carleton University student and a gunner for the 30th Field Regiment, Royal Canadian Artillery -- a reserve unit based in Ottawa.

The young reservist had been in the military for a year and a half, mostly with the 11th Field Regiment in Guelph. She transferred to Ottawa just six weeks ago when she started school at Carleton University to study public affairs.

Carleton remembers Keyes-Oliver

Although Keyes-Oliver just recently began university, school officials told CTV Ottawa she had already made a big impact on the tight-knit community of students living in residence.

"There is a (residence) fellow on every floor, and she says Arielle was the first student to come in and greet her and they got a Facebook page going," Carleton University Chaplain Rev. Tom Sherwood told CTV Ottawa on Monday.

School officials say counsellors are also available for those who knew the young reservist.

"Especially since it was a student in residence a lot of people can kind of turn to their other friends and other residents who are all going through the same thing. But there are services available, and if students feel the need to, they should definitely be using them," said Brittany Smyth of the Carleton University Students' Association.

Defence department tight-lipped

Meanwhile, Canada's defence department is saying little about the incident other than that it remains under investigation.

Keyes-Oliver's family issued a statement through the Department of National Defence over the weekend, thanking friends for their support during their time of mourning.

Her family said she was proud to be Canadian and proud to be in uniform. The statement also said Keyes-Oliver was a natural leader and concerned with everyone she came in contact with.

It hasn't been determined yet if she will have an official military funeral.

With a report from CTV Ottawa's Catherine Lathem