Of course, being a Riot employee, she is contractually obliged to pretend that Valve doesn't exist, where both TF2 and Dota 2 have been using in-game exchanges between characters to establish how the two characters, whether they be allies or foes, feel about each other for years. (Ranging from "Thanks Engie!" to "Tidehunter, I hear you've been calling me names behind my stern.")