I am so sorry for you. Is there a good role model that you can speak to in order for your mom to get help?
Here are some reports that will give you info on secondhand tobacco smoke--in which case, cocaine is going to be just as bad, if not worse:
"That report concluded that children whose parents smoke are more likely to experience respiratory infections and respiratory symptoms."
http://www.surgeongeneral.gov/librar...fullreport.pdf
Secondhand smoke exposure causes children who already have asthma to experience more frequent and severe attacks.
• Secondhand smoke exposure causes respiratory symptoms, including cough, phlegm, wheeze, and breathlessness, among school-aged children.
• Children exposed to secondhand smoke are at increased risk for ear infections and are more likely to need an operation to insert ear tubes for drainage.
CDC Features - Children and Secondhand Smoke Exposure