No, it is not appropriate at all. Such topics are very private and often fall into the realm of vulgar and inappropriate content that should not be shared publicly.
Yes, for example, 'Oranges Are Not the Only Fruit' by Jeanette Winterson. It's a semi - autobiographical novel where the main character, who could be seen in a situation similar to a 'wife' in a sense within her community, has relationships with women. The book also explores themes of growing up in a strict religious environment while dealing with her own sexual identity.
One possible story could be that the wife, in a femdom role in a BDSM context, decides to try a new form of role - play. For example, she might create a whole new scenario like a medieval dungeon setting where she is the strict mistress and her partner is the captive. This new setting can bring fresh excitement and challenges to their relationship within the BDSM dynamic.