[PW] ? another name for mother-in-law

[Mary Barna]

Ok, trying this again:
This is a real Friday afternoon question. I have a friend who is very
close to her daughter's mother-in-law.  The two mothers have trouble
explaining who the other is, when doing introductions. "This is Ruth, my
daughter's mother-in-law." Sounds odd, like my brother's cousin's son.
It's even harder for me, " This is Ruth, Linda's daughter's
mother-in-law."  Is there another name for mother-in-law?  Something
shorter?  If I just said "This is Ruth." , I would still have to explain
the connection in even more words.  

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Mary B. from the 
Beautiful, Exotic Valley Community Library (PA) 
the jewel of the Lackawanna County Library System 
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