On the side point, I think it is pretty clear in the shidduch world that the girls need to be more appreciative when they have a date than vice versa, considering the guys are getting a lot more requests for dates than the girls. Which is another reason it works out better for her to travel to him. She has less dates thus has less times she would need to travel. If he would need to travel for many of his dates (and he has many more than her), it would be a lot more expensive.
Not to mention she has fewer dates and thus has fewer times she would need to travel. And speaking of dates, he has many more the she.