You're very right. When someone is stricken with tics, people DO stare. But tics can be controlled with medication. Has your mom taken her child to the doctor? Has the doctor put the child on any medication? If the medications aren't working, then the doctor should try something else -- a different medication, or else increase the dosage of the current medication.
There ARE things that can help. Make sure your Mom is doing what should be done!!! If she isn't then perhaps YOU should step in and help this child. The poor child shouldn't be made fun of, at school or in public. That would be a horrible life for the child! Make sure the child is taken care of!
Best of luck and God bless. Hugs, Lee