Well this was certainly an interesting read.
So...it turns out there were 4 brothers, eh? Intriguing. Also, I like how the ending basically explains why, although she seemed pretty apprehensive/unwilling throughout, she never really tried to run away or anything.
I mean, free tuition, a guaranteed cushy job...She suffers for one month and is thus set for life. Rather, it may not even be suffering after she gets used to it...