Op is basically normalizing all kids of abuse to her children.
Even the "romantic" storylines of Buffy (I have seen all episodes, I am a great fan) has an emphasis of possible betrayal. Betrayal of trust, betrayal of friendship, betrayal of your love interest. Even worse,violence. The story line with Spike and Buffy, where the sex is explicit and bordering on SM, they kiss, punch, bite and shag. Buffy seem especially attracted to the coldness of Spike, his lack of emotion and empathy. When Willow is with Oz, even she is scared of what he might do to her when he turns into a werewolf.
On a more chilling level, the twists of reality, and how you perceive it.
The story line where Buffys mum gets cancer, and Buffy works her socks off in a burger joint. Buffys mum dies and she has to cope on her own. Highschool, slaying vampires, work to pay bills. And suddenly Buffys mum reappears, and Buffy is so glad to have her mum she does not really question it.
When Buffy one morning wakes up and finds she has a younger sister suddenly living there. Her mum does not understand Buffys surprise, it has always been the three of them!
As a grown up, or an older teen, you can see it for what it is. A gory teen soap with unrealistic fantastic story lines. Children dont have the same ability to question critically.
My sons would be scarred for life if they were to watch the human centipede. I saw a youtube clip. The very concept is sickening. I am against censorship, but some films really take the biscuit.
I think my question, and possibly the teacher, or a social worker might wonder why this couple wants their children desensitized to violence. Why normalize it? Unless it is deliberate? To show their children that THIS is what reality for most people is like? Punches and kisses go hand in hand?