Tech on Coach situation

[bigdog5142]

Had a 8th grade girls game today...partner T's up coach...real jerk of a lady. Anyway...I explain to her that she must sit for the rest of the game as per rule. She goes on to say that I don't know what I'm talking about...I tell her that she can look in the rule book. Anyway...she sits down and instructs her assistant coach to stand up. I was so taken back and couldn't place the rule about bench personnel sitting, so I allowed it. I should've ran the coach later...but I'm getting my "legs" back under me...I'm chalking it up to remembering how to blow my whistle as I've back in officiating after about a 7 year break. How would you handle this one?