My MiL passed away before I got pg with dd, about 8 years ago. She was the warmest, funniest, gutsiest, friendliest, smartest woman I've ever met 
On meeting me for the first time she said 'welcome to the family!' and gave me a massive hug - I'd only been seeing dp for 4 weeks! 
She was a working mum who taught dp to pull his weight with the domestic stuff - which he mostly does, v unusual in men of his advanced years!
She also famously did the licked tissue thing to get a mark off my cheek

She was fab and I miss her loads. I don't get on with any of my bio family, and I consider MiL to be my 'mam.' She died horribly of cancer after a long fight, and on one of the last times I ever saw her, I gave her a big hug and kiss and told her, 'I love you, mam.' I am a soppy sentimental type, and I'm so glad I did that while she was still here and told her how I felt.
Lovely lady. Glad to see other positive MiL stories too!