Guys, catholics, if original sin gets inherited, then mary inherited too?

if sin is not inherited then maybe mary chose not to sin and can get the holy baby but if according to #catholic sin taints the offspring... then mary inherited too and not pure to get the holy baby... who would inherit from her and adam... the sin unless it is not inherited?

Updates
+1 y
if original sin is inherited then nobody pure... as catholics teach "everybody guilty"... if so "god would choose someone pure not a sinner" is impossible , nobody pure, unless we admit sin is not inherited.
also we see in book romans and jeremia god chose BEFORE BIRTH AND BEFORE ACTIONS so even if they WILL sin later, already chosen by grace... god does not choose conditionally "if pure".
Guys, catholics, if original sin gets inherited, then mary inherited too?
Post Opinion