Sounds like they've bulldozed over the real points of the story for fashionable nonsense.
It's about genteel poverty where a servant and a London house can be kept but lodgers must be welcomed.
Crucially it's about women making their own way in a world of useless men, which is so often a theme in Streatfeild's books. Her biography explores some intense relationships with a man and woman, so she was complex.
So often weak, ineffectual, selfish or just absent men make life difficult for an often fragile or stressed woman, helped and supported by strong and often cross-class female friendships. This plays out time and again in her books.
She's great on the trials of adolescence; unhappiness re appearance and clothes, hard to manage emotions, jealousies etc.
And the reality of the world she knew - being an actress then she understood stage, screen, theatre school life etc for often very young girls.
All that was what I've always loved about her books.
Bolting on the fashionable nonsense and taking away one of her most powerful and fascinating female charactors in Madame feels infuriating.