That might help you feel better but it will only start a fight and galvanize her position, reinforce her prejudice, and "prove her point" in her own mind that all conservatives are nasty, selfish, oppressive, etc.
A better approach, if you're actually trying to convert her, is much like religious conversion (IMHO it _is_ a religious conversion) - neutralize her opposition with kindness and understanding, and lovingly try to point out the shortcomings of "her" way and try to convince her of the benefits of "your" way and her need to adhere to it.
I know this sounds wimpy, but I really think it's the only way. I would hazard a guess that no liberal has ever been converted to conservatism by unassailable logic conveyed in the context of a heated argument.