First, you seem to forget that the 8th Amendment not only prohibits cruel and unusual punishment (which the death penalty would be considered in this case), but also excessive bail, which it seems you were also upset about.
Secondly, you also seem to be anti-14th Amendment by calling for her execution without Due Process. Calling for the execution of people committing petty theft and possession of drug paraphernalia is ridiculous, even by your standards. I guess it was foolish of me to expect you to actually care about the Constitution.