No, except "recuerdes", your verbs are alright, the heads up is about coherence when the secondary characters talk to your heroine. The bearded man starts talking to her with "usted" ("usted
está aquí") and then he goes on with "tú" ("
estás bromeando"). If they're supposed to know each other, it's natural that they converse in an informal tone, but they can very well treat each other formally if that's the treatment you want to use between those characters.
My advice is merely that you choose one and keep it constant.