Quite the opposite. The believing remnant is the remnant of Israel. The Church is (a) not merely "the Gentile Church, and (b) is definitely not a remnant.
The Remnant here is the Remnant Church. The Gentile Church, the Jews (Woman) who repents is PROTECTED, thus Saran can not get at her. The 2/3 of the Jews who refuse to repent do not have the testimony of Jesus AND they are 2/3 so they couldn't be a Remnant anyway.
Step it up brother, don't allow a pre-perceived notion to take you in the wrong direction. The bible always explains its seeming conundrums, the facts are once we learn to stop buying into things that can't be, even though they may puff up our pride...........only then can God teach us His deep truths.