The problem with that argument is that there is no law regarding abortion.  Therefore, the Liberals are just as opposed to the "law of the land" as she is, as both sides' views in relation to nothing are equally opposite.

Now, if there was actually a law that stated "all women may get an abortion at any time during a pregnancy without restriction", then yes, she would be opposite to that.

Because there isn't, the Liberals are imposing their specific narrow viewpoint on a perfectly legal and rational position to hold in the current state of the ACTUAL law.  They are the ones completely in the wrong here.