C.K.
There are great activities she can do for exercise - walking early in the day with you - or even at the mall, swimming, some of the indoor play gyms for kids, YMCA, public rec centers, a playgroup with friends, The Parent Connection (in Tucson) which has an indoor gym, etc. It's important for her to have physical exercise so she can gain stamina for being in school and for her overall health.
Best of luck!!