I was hoping to get some responses back before giving you an answer. Terriers are high energy dogs and it is possible that she will become bored with out any other stimulation. You could set up some agility type things in the house like tunnels and small jumps. You might provide other stimulating activities like tracking things through the house. You could work with him on obedience as well to stimulate him.
The following site is helpful in helping owners train their dog. Be sure and click on the link to the page on obedience at the bottom. and links on subsequent pages leading to detailed instructions. It also has links to tracking and other commands
Training works best if you train at least 30 minutes a day (two 15 minute sessions). I would start making your dog work via the Nothing in life is free program (NILF). It is outlined below.
Now she may get more interaction with people and get out more with another family, but if she has been with you most of her life, she may have trouble adjusting to a new household and the number of people there. Now you might find someone in the neighborhood, perhaps a neighbor's child who would take your dog for a walk for a nominal fee. Most children like dogs and are happy to walk them for you.
I hope this information is helpful to you. If you would like any additional information or have more questions please don’t hesitate to press the reply to expert or continue conversation button so I can address any issues you still have . If you do find this helpful, please take this opportunity to rate my answer.