choose? My preteen son has some autistic tendencies and on occasion he will become violent or threatening to my preteen daughter during times when my husband and I are not right there with them to intervene. We never leave them alone at home, but sometimes they will be downstairs when we are upstairs (or vice versa), and that is usually when these episodes occur. The problem is that he will try to restrain her or keep her from coming to us when it is happening. I don't want to forbid him to be alone with her all together, but unless I can find a device that she can push to alert us to a problem, I might just have to insist that she follow me where ever I go in the house.

Does anyone know of such a device or some other solution that could work just as well?