Her current school *might* consider arranging for her to do her pregrad in Toronto, but bear in mind this might be very hard - her school likely has contacts with local hospitals and LTCs to take their students. Schools
in the Toronto area have contacts with those hospitals. If her school is able to arrange something for her, advise her to take whatever she can get, and not be picky. She loses the right to be picky by requesting an assignment outside of the school's normal area.
That said, the school may also say she needs to do it wherever they see fit, and therefore might just need to commute to her pregrad. Lots of people work in Toronto who live in Niagara, and vice-versa, so she might need to do that. Most schools have it right in their info that by agreeing to attend their school, they agree to placements within a 200 km radius of the school, and are fully expected to commute to and from placements. "I don't have a car" is not a valid excuse in their eyes.
Tell your cousin to talk to the person who arranges clinical placments at her school ASAP. I very much doubt that another school will take her in just to do pregrad with them, so her only option is likely to do her pregrad with the school where she completed her studies. Usually during pregrad in Ontario, once or twice during the pregrad a clinical teacher from the school comes out to chat with the preceptors at the location, to find out how the student is doing. This is another reason why it might be difficult to arrange a placement so far from the school, although it may work if someone who teaches at that school lives in Toronto...
Good luck to your cousin! Hope they figure something out for her.