I think I'd ask for a chest x-ray and an ENT consult. The x-ray to check for an enlarged heart and ENT to check for structural abnormalities and/or a foreign body airway obstruction. I'd check those things before adding more meds to the mix. Obviously if she needed the Albuterol I'd give it, but I'd avoid adding more meds, even the tums, until she's had a more thorough work-up. Adults sometimes have to sleep sitting up because of obesity, sleep apnea or reflux, but I don't think any of those things are common in 6 year olds. I have heard of people having deviated septum, or other structural problems that prevent them from breathing through the nose while sleeping, or narrow nasal passages that make it difficult to breathe. I'd definitely get more info. Also, wheezing will not always occur with childhood asthma, and of course it doesn't always occur at the doctors office. Stay on top of it and go with your gut! If you're worried, get a second opinion!