Breathing treatments

So, at 4 months old, Payton has started crying for her breathing treatments. Take this morning for example, I had to wait an hour after she ate to give Payton her treatment. 15 minutes before it was time to start, she starts fussing. I can't make her comfortable. So we sit down and get the treatment set up. I notice that she is wheezing a little, which is normal. I get it ready to go, turn on the machine, and immediately, Payton quits fussing. I am not sure if it is really smart or really sad that she already is letting me know when she needs a treatment. She has gone from always crying through them to crying for them. She already knows that it will make her feel better! Hopefully, she will always feel this way about them!