yeah i understand... well then probably that's the best way for you, just don't drop 4000 CAD all of a sudden in her account
and about the 3 month history thing, i remember that but i`m not 100% sure. but yeah 4000 CAD seems a good sum.
by the way if her TRV gets rejected (i hope not!), when you apply for a student visa, be prepared to have proof of larger deposits in her bank account.. there was a thread about it around here, someone mentioned a sum around 25-30K $. i guess it's understandable given the fact that international student taxes are absolutely preposterous... ???