The diplomatic French have a lovely solution to our "problem" of what to call your "in-laws"!
beau-père = father-in-law
belle-mère = mother-in-law
These terms of endearment are much easier on the ears and easier to say (fewer syllables!) than our terms. I would not mind being addressed as "Belle Mere"
rather than by my name or something I'm not to them (like "Mom" or "Grandma")!
