Romana Crucifixa Est 14 Better
The missing "than whom?" is intentional. In cryptic inscriptions (of which this is a direct homage), the standard is implied: Better than the other 13 methods of crucifixion, or better than the 13 other women. This ellipsis is a level-14 rhetorical figure.
A: “A Roman woman was crucified.”
As noted by Roman Cicero, it was crudelissimum teterrimumque —the most cruel and disgusting punishment 1. romana crucifixa est 14 better