The previous posters have given good advice (especially Kitiger). My limited experience with CP did cause me to sign in to write this: Never forget there is a 12 year old in there! Explain what you are about to do so she knows. The body's condition may be completely different from the brain's. One of the smartest kids I've ever met had cerebral palsy. Make eye contact. Treat her as a person, not a sickly child or (worse) an object to be dealt with. Include her in conversations, even if only non-verbally. It won't hurt and it may be as important as the physical nursing you'll be doing.