I have to deal with "one" multiple times a week. I see her at Church, Cubscouts, and Co-op. That is on a good week. She is not a pig, nor does she speak latin (how stupid is that, to speak a DEAD language everywhere you go) like your good ol' SIL.
But my special "one" is the world's expert on EVERYTHING. She seems to be in a constant competition with me. Its funny, I don't remember entering a competition with her. Then again, she competes with everyone and seems to always have done it bigger, better, faster. And she's pushy. I will say she is talented (and pretty) but... Sometimes I wonder if she's mental.
Her kids are excellent for her, but for others they are BAD. Like throwing metal chairs in the Church gymn, bad (scratching the hardwood floors). Or talking back to grown-ups, bad. Or throwing metal chairs in the gymn after being talked to by MANY adults, bad. Or telling their music teacher she essentially sucks at teaching, bad. (Okay, I am the music teacher, but some respect, please!) When I have spoken to her about their mouths and attitudes she says, "Oh, they do that". That's it. The weird thing is they would NEVER talk to their mother that way. She'd probably skin them. They are extremely well-behaved for her, no sass, no messes, nothing. But for others it is MAJOR attitude.
So for now I just deal with being less pretty, less intelligent, less talented than her. And I must bask in her glow of perfection in housekeeping, homeschooling, Church service, homemaking, etc. My 5 kids will never be as brilliant as her 4. But I am just not as good at teaching them. My bread even stinks compared to hers. I guess I will never come close to her perfection.
I am simply trying to avoid her and/or like her despite her "perfect" flaws. Afterall, she tells everyone that I am her "best friend".