Hi scandi! No, Misty would not have to go. Not unless LE was prepared to charge her with something. You never have to answer LE's questions if you don't want to. You don't have to show ID, you don't have to tell your name, etc. and you NEVER have to sit in the room with them and answer questions, if you have not been charged with anything. Once you are charged the 5th amend. kicks in and you have the right to counsel. Lots of folks don't know that they don't have to talk to LE.
I would caution though, that if you refuse to talk to LE, they will probably charge you with something! Even if it is just distrubing the peace - because they will want to know who you are and why you don't want to tell them........ LE is generally very suspicious of anyone who refuses to identify themselves
HTH,
Salem