Eric
1) It is quite clear that conversions to Orthodoxy divided opinion at that time. Alexandra hesitated over marrying Nicholas for that reason. In families not everyone agrees with everybody else. That Irene disagreed with Ella over her conversion does not make her a villain.
2) I rather think we are dealing with things said in the heat of the moment here.
3) As one of Alexandra's two surviving sisters, and aunt to the real Alexandra, and who was, moreover, living in Germany, it is hardly surprising that Irene concerned herself with the issue of whether Anna Anderson was an imposter. or not. Olga Alexandrovna, who was in the same relationship to Nicholas and is usually seen as a sensible person, did too. Most of us, if someone turned up claiming to be our long-lost niece or nephew and who was not an obvious imposter, would want to find out more, and, quite possibly, see them face to face. I have a cousin who disappeared some 15 years ago. If someone turned up claiming to be him, I am quite sure that his sister (both parents are dead) would want to meet him and judge for themselves. Anna Anderson fooled a lot of people. That Irene ended up thoroughly confused and upset is hardly surprising.
Ann