Simply ask her why she interprets the text that way. This will reveal her presuppositions. Then you can ask her where in Scripture she gets those presuppositions. When she begins to question these, then you can help her build those presuppositions on clearer texts of Scripture.

__________________
Patrick
OPC
MDiv, RTS Jackson.

"He does well, that discourses of Christ; but he does infinitely better, that by experimental knowledge, feeds and lives on Christ." Thomas Brooks.