With sadness. They're parents. How would you react? They can't ground her!
However, our normal loving parental law makers, such as the Bushes, support doing that very thing to over 700,000 pot possesors every year in the U.S., unless one of the possessors happens to be their own children. Then they excuse themselves for rescuing their children from the grinder because "that is what any normal loving parent would do!" The public will just have to understand their loving motives in rescuing their friends and family while continuing to "make an example" of nasty "drug addicts" and "potheads".
If love and leniency is good enough for their kids, it's good enough for mine. If my kid has to fry (I don't actually have kids), so does theirs!