I figure it's obvious getting to see the Doctor was a perk of being one of the few agents sent by canon to find the only guy who could help them now that the universes were being assaulted, 'cause they knew him from before and could appeal for his help, and that breaking down walls was just a temporary price they'd have to pay. Of course, being Rose, the perk took over for her on the personal level, but I don't think the attempts to find him were nothing more than trying to get back to that guy she had a crush on.