The meth will not be out of her system and the anesthesiologist must be informed. As soon as possible. Even small doses may interfere with several types of anesthesia causing life-threatening arythmias.
I might add that smoking degrades the ability of the blood to carry oxygen because of the carbon monoxide binding with the hemoglobin. She should not have had a cigarette within two weeks of the procedure.
Caregiver is absolutely right, she needs to get that Meth and carbon monoxide out of her system so she does not have any complications, arrhythmia are nothing to play with.