The option of using a trailer is, of course, determined by the zoning laws of each city and by the finances available to the family. We discourage the sharing of a room by the girl and other children in the family. While this does depend on the ages of the children, there are inevitable problems which arise. When a girl shares a room with a very young child, her sleeping and waking habits are determined by the child's schedule. This also creates a lack of privacy for the girl.
Most small children are inquisitive and like to handle other's belongings.
Often this is a source of irritation for the girl and frustration for the child. If the child who shares her room is an older daughter, resentment may develop for having to give up part of her domain. If she and the girl have a personality conflict, the daughter's refuge becomes a very unpleasant place for her to be. There is the added risk that your daughter may be constantly exposed to negative or unhealthy attitudes. Under no circumstances do we recommend that a girl share a room with a male child older than infant stage.