From your explanation of her symptoms, it appears that she is having asthma problems. Since she is 5 yrs old, does she have a peak flow meter? If not, ask your MD for one. This is a mother's best friend when it comes to controlling and being aware of her child's asthma. Before she goes out to play, have her do an Albuterol/Xopenex tx 15 minutes prior to playing. This will open her airways allowing her to play w/o becoming exhausted. If she is not on a corticosteroid, ask your MD about it. This will keep the inflammation down in her airways. When the airways become inflammed, an asthma attack occurs. Best advice: Get an asthma specialist (a pediatric one if possible). When she is out in the cold, make sure her throat, head, & mouth are covered. Breathing cold air can set off an attack. If she has stuffed animals (which child doesn't?), place them in the dryer for about 5 minutes on the higest setting the toys can tolerate. This will kill the dust mites. Must be done at least everyother day. Place mattress protectors & pillow protectors (designed for allergies & asthma) on all beds she sleeps in (have her carry her own pillow to a friend's/relative's house). Make certain no one smokes in the house or around her (smoke clings to clothing, so wear a smock over clothing and keep in a sealed bag). Avoid using fireplaces or eating from restaurants which serve charbroiled foods (consumming these foods irritates the airways and can cause the airways to become inflammed resulting in an asthma attack). The American Lung Association has numerous information available (free) ... just give them a call. If the area around her ribs are contracting (sucking in), this is a HUGE sign that she is not getting enough oxygen ... take her to ER IMMEDIATELY! Good luck to you and your little girl!
IF SHE IS HAVING A PROBLEM, DON'T HESITATE TO TAKE HER TO THE ER! Ask the ALA for the tape (free) on how children can explain to adults about when they are having an asthma attack. This tape teaches children about asthma & how to explain the difference in having trouble breathing or feeling bad (such has headache, bodyache, colds, etc).
Info meant for educational purposes only & not med advice, seek med help IMMEDIATELY if child demonstrates breathing problems.