Is your mother also congested? Does she have COPD? Is she on oxygen? If her condition is serious, it may take some time. Now, you said she doesn't get "instant" relief. Does she get any relief as time goes on? Colloidal silver does repair damaged tissue. How many times a day is she nebulizing? I would suggest at least four times a day.However, if she is having difficulty catching her breath, then just put a small amount of colloidal silver in the nebulizer and take it easy. Too much colloidal silver can arrest her breathing. So the key may be "easy does it." The relief may not be immediate, but she should feel improvement as time goes on. If she is congested, I would also suggest Clear Lungs. This will help to bring up any congestion.And by using Code LR001, you will receive a 15% discount if it is not on sale.
Another suggestion would be mullein that has healing qualities aimed specifically for the lungs.