I’m sorry but your interpretation is not common among Torah keepers, in fact almost nothing is common among Torah keepers. We disagree about everything.The language is normative from my time in Torah groups, that's what I'm basing my interpretation on. If not, then I stand corrected. It's a fair and reasonable assumption to make though.
Secular woman who is betrothed is fair game to "rescue". The subsequent war bride comparison was drawn. Inference is not peaceful but war.
Woman "in Truth" who is engaged is off limits. This is clearly what she wrote and is an obvious comparison.
It is clear that there is a double standard, one for betrothed secular women, and another standard for treatment of betrothed women "in Truth". The Truth is easily presumed to be observance of Torah, it's entirely dense and obtuse to suggest she's talking about Rastafarians or Scientology.
But we can wait for her to let us know if the Truth is keeping Torah or if that also includes the goyim who do not.
My point was that the doctrinal slope was a slippery and dangerous one. It's one I've seen men in Torah groups slide down to where they claim a greater affinity with Muslims than with Christen"dumb" or our perennial favorite the "whore church". And to be careful to avoid such pits.
I think you have applied a negative perspective on what I think was meant to be the biblical perspective that if a non-believer leaves a believer than the believer is not bound.