Ortiz is not responsible for Aaron's death, even if she lied.
The real problem is the how the prosecution system is based on terror instead of on justice. Laws can be made less amenable to be used to terrorize, but as long as the deep roots of the system are based on terror, changing laws will not suffice.
The aim should be to fix the system and the laws that make the system, not only to fix each overreaching law at a time.
This besides the issue of whether or not making Ortiz pay is adequate.