@Little Mx InfernoI don't mind
@pyroman's suggestion here; a surprise meeting would certainly be acceptable, but there has to be some sort of pretext to why Mao would seek Erok out. For example, perhaps she had heard from the same merchants that Erok had dealt with that there was someone searching for the Avatar who had suddenly left town in a hurry. Mao could deduce that Erok might know enough information to be helpful in her own search for the Avatar.
At the same time, Mao doesn't know exactly who Erok is, nor does she know his intentions; Erok doesn't know Mao either. Obviously how she handles the situation is up to you. I was planning on having Erok wait for Chit to get back to him via Hawk, and if
@Shanks took too long to make a post, I'd have Erok begin to worry that something had happened to him, the Avatar or both, and take off for the Fire Kingdom after some delay.
As a side note, I'm actually currently re-watching the original series. It's aged pretty well. Not sure if I'm going to re-watch Korra just yet though, seeing as I just finished it when the series ended.