Make sure your loved one has plenty of supervised activity to channel her energy and reduce the frequency of wandering. If she is intent on wandering, redirecting her to another activity can be a simple yet effective strategy.
Interestingly, Alzheimer's disease affects perception in such a way that environmental interventions can help curb wandering. For instance, a painted black square or a dark doormat on the floor in front of a doorway may look like a hole to your loved one, preventing her from exiting.
Sources:
Behaviors: What causes dementia-related behavior like aggression, and how to respond. Alzheimer's Association. 2005. http://www.alz.org/national/documents/brochure_behaviors.pdf
Mace, N. L., & Rabins, P. V. (2006). The 36-hour day: A family guide to caring for people with Alzheimer's disease, other dementias, and memory loss in later life (4th ed.). Baltimore, MD: Johns Hopkins University Press.
