There are a few little snippets from Ann's point of view. The comment in (I think) Attic Term where she notes that "caring for your family is more important than just people" or some such (in fact, Ann gets quite a few sympathetic moments in Attic Term, where even Nicola concedes that she is good with her infant young). Then there's a snippet at the start of End of Term where she finds it beastly for Nicola to wish openly that Rowan was still at school. On the whole, though, I agree that Ann's impossibly law-abiding piety borders on the unconvincing at times, especially in Run Away Home. AF's dislike of her was just too obvious.