'Long skirts aren't as hot though!' You understand nothing. You are operating on the most basic level of sexuality imaginable. You think it's all in what's exposed when the true arteur understands that it's all in what's concealed. Consider:
1. Covering all the bruises and other marks you've left on her legs.
2. Keeping her nice and modest, because she's not some slut, willing to go with anyone. She's in fact very very devoted to one special individual who she could never even dream of leaving.
3. Tying her thighs together with rope to make a hobble. She can still walk, but not very fast, and can't run even a single stride.
4. Putting a shock collar on her thigh. This is not only much safer than the neck (and her welfare is of course your highest priority) and far better concealed, but has the added benefit of, if triggered, causing her to stumble, maybe even fall, impeding any silly escape attempt, and here comes her concerned partner to help her up and take her home.