Didn’t they charge Scott Peterson with the murder of his unborn son?
The pro-choicers love having it both ways.
When attempting to use a logic trap on a leftist, you make the basic mistake of applying logical, linear, “if,then” reasoning.
To a leftist, they start with the desired outcome, then form their opinions about the “rules” with that outcome in mind. So, yes, the rules MUST be different in the case that you describe.