I would beg you to call your DME (the company that gave you your machine) and tell them you want a data capable machine. Tell them you want to be able to monitor your daughters' progress on a daily basis. You may have to get your doctor to specifically request the the machine on a prescription, so your insurance will pay. The Resmed S9 Autoset or S9 Elite will provide you leak rates, number of apnea and central incidences, AHI average, 95 percentile or cpap setting. You can take the card out of the machine and download a bunch more information on the computer. You may not physically detect leak rates, but the machine will tell you if they did occur. This is important because if the air is leaking out of the mask and not into your daughter's lungs... improper therapy will occur. Your AHI average should be less than a 5.... and less than 3 is great. If you monitor the leak rate and AHI rate, you can tell if your daughter is getting proper treatment. Without this info you have no idea.
I had a Resmed S8 Escape II. I couldn't get readings every morning, but my DME said they could get the readings if I brought my data card into their office. When I did, they finally admitted that the Escape could not give them data either. I was flyin' blind the whole time. When I told my doctor, he gladly wrote a prescription for a Resmed S9 autoset.