Beyond this case specifically, Brown's decision will speak volumes regarding this nation's outlook on justice. As a society, do we stress restitution or rehabilitation?
If Governor Brown approves Davis, the other Manson folks (Leslie, et,al) are one step closer to the door. There's no other way to slice that pie... and Debra Tate knows that.
If Governor Brown denies Davis... it will send a strong message, that these folks will likely never be paroled.
This decision is truly, one of the most significant "current day" situations related to this (40+ year-old) case. One might even say, that this decision is the most significant legal situation, since the results of the original trial(s).