More info on my 14 yr old

Hi Nicholeen A few weeks ago I asked you a question about my 14 yr old not wanting to start her 24 hr loss of privileges. After about 5 days she asked me if she could start because she was bored, what a relief on my part. I find it very stressful when the children choose to stay out of control for days on end as it really affects the home and the atmosphere. They can bully everyone around them without earning any consequence because they have already earn't 24hr loss of privileges. This time it's been over a week and she is still refusing to start her 24 hrs. When I ask her why she just shrugs and says I don't want to. She has been refusing to miss out on the family's privileges, helping herself to Lollie's, deserts, and anything else she can get her hands on to, I have explained that the children still get family activity night treats but should be missing out on the other treats during the week. She will just stand in front of me and eat the things I'm telling her not to eat proving to me there is nothing I can do about it, Our family had a film night the other night wich I had pre taught her that she would have to miss out on if she did not do her 24 hrs first, still refusing to do her 24 hrs we reached the film night, she sat down with the rest of the family and refused to leave the room, this caused upset with the other children that were sitting there waiting to watch the film. I wasn't sure if we should cancel the film for the whole family or just proceed. We ended up just turning the film on any way, I spoke to her and told her she shouldn't be there because she didn't have her privileges back yet, but she still dicn.t move. During the day I don't get to check back with her every fifteen mins because I am schooling the children in another building and when I leave home she is often still in bed, I don't know if I am being to unreasonable, but the thing I asked her to do that she originally earn't the 24 hr loss of privileges over was getting up with the family and coming to breakfast at out communal dining room. It's been yrs that we have been trying to address this issue, not sure what to do about it. She has lots of reasons why she won.t get up with other people sharing her room and she hates it at the dining room, it's boring and noisy etc. A trip to town came up and she told me she wanted to do her 24hrs while she was on the trip with Dad I told N0 her she needed to do her 24hrs with me following instructions. Am I doing it right?