Final answer:
The statement is false. Using a ready-to-eat cream filling does not require baking a pastry pie shell.
Step-by-step explanation:
The statement that 'To use a ready-to-eat cream filling, she must prepare and bake a pastry pie shell first' is False.
When using a ready-to-eat cream filling, the filling is already cooked and can be used directly without the need to bake a pastry shell.
To create a pie using a ready-to-eat cream filling, all that is required is to pour the filling into a pre-baked pastry pie shell and chill the pie until set.