Seems like Erina and Tadokoro get along pretty well. Presumably because they're the same character and defer to her in the same way.
I'm kind of hoping once we see someone higher in the ranks than Erina we'll see her put in her place a bit. Having her be God of Cooking and nobody better is a little boring. She's supposed to be a rival character, not the end boss. I mean, I don't know, maybe she's gonna pull a Gary Oak and be like, "sorry I beat the No. 1 of the EliteFourTen before you did," but at least he was presented as more of a rival the entire time.
Souma has to bribe her with shameless manga just to get cryptic one-liner advice on his dishes. And she's been presented as an unbeatable prodigy. I predict at least 100 more chapters before he even gets a shot at challenging her.