"Christina has a maturity that most 16-year-olds do not have," Jennifer said, but there was still a rigorous application process to navigate.
Ten finalists from three regions were whittled down to six before the two successful candidates were named.
The process involved hours of interviews with panels of up to six people grilling the applicants, as well as volunteer days and the writing of an essay explaining what the applicant would bring to the college.
In her essay, Christina outlined her difficult upbringing and wrote of how far she had come and of how determined she was to succeed.
When she found she had been selected she was "over the moon," but didn't want to broadcast it too much in case she was seen as a "try-hard," but she soon got over that. And her friends and family were just as excited.
"She has succeeded and is shooting for the stars," Jennifer said.
"They could see how far she has come in her life."
Christina said the college offered more than schooling.
"You learn about the world and coming together as one. It's a really vigorous academic course too. Universities such as Harvard go head-hunting there for students." Which is handy, given her "ultimate dream" of studying corporate law at Harvard.
She leaves for Vancouver late this month, and will stay in dorm room-style accommodation with four other students.
"They try to put as many different nationalities as they can in the same room,"' she added. The scholarship covers a flight home at the end of each school year (in May), Christina having accepted that she will miss a couple of summers. She was looking forward to being independent and meeting new people, and was excited about the travel, having been no further than Australia so far, "which doesn't really count," but would miss time to herself, Jennifer's cooking, her family and especially her best friend Priscilla.
"People tell me I'm lucky and I say luck's got nothing to do with it," she added.
"Anybody can do it. You've just got to put the effort in. Life's what you make it."
STUDENTS FROM AROUND THE WORLD
United World Colleges (UWC) are collectively described as the only global educational NGO that brings students together from around the world, selected on merit within their own countries, regardless of race, religion, politics or the ability to pay. Thirteen UWC schools and colleges operate in Africa, Asia, Europe and the Americas.
The scholarship programme is designed to ensure diversity through selection on potential and merit.