She broke the law. You may not like the law, but she broke it and she had been on probation before.
Your main defense of her was this,
And when Grandma goes to jail, I'll bet it will have a great effect on her grandchildren. "Where's your grandma?" "Jail."
As I asked you, should grandmas be exempt from the law?
You are correct on this point. Grandmas are not exempt from the law.
Everyone should be treated equally under the law. I realize it doesn't bother you, Dane, but for the benefit of any lurkers out there consider this:
Under the proposition that everyone is (or should be) equal under the law, if the prospect of putting a 72 year old grandma in prison for 5 years over 4 ounces of pot doesn't seem right, then putting anyone in prison for 5 years over 4 ounces of pot isn't right, either.