Whatever side of the argument that you are on, isn't this literally what you have just done to 'the Trans Turncoat'. Like most penguins , I couldn't give a shit whether you're male female or trans, but I have a good nose for rooting out hypocritical arguments masquerading as fact.
In this instance she doesn't fit your particular worldview or agree with you on a given issue and so must be discarded as a Turncoat. It's very polemic and dangerous thinking - demonstrating excellently the modern penchant for intolerant tolerance and the problems of arguing truth from a point of subjectivity.
Everyone can identify exactly how they want, unless they don't identify how I say they must, then they're wrong. Doesn't make any difference whether that comes from the mouth of a non-trans, or trans person... it's the same problem.