My MIL is the mother I wish I had.
She is not intrusive, lets us know she's willing to lend a hand anytime without being pushy, she respects "my territory" even though to be honest I would be able to share my home and my kids with her without a second thought--perhaps because she does hold me with an open hand.
She has gently given me advice (never unasked, but I wouldn't be suprised if she guided me into asking--not in a guilt tripping way, but just because of who she is).
I think it helps that she has her own interests, so she's not dependent on DH for her life to have meaning. But this lady will never want for a home with many people to love and care for her as long as I'm alive (and probably after that too). She has definitely earned my love and loyalty.
She lived with us for 8 weeks after I had my twins. It was a high stress pregnancy, a horrific birth experience, I was in severe pain for 2 weeks, one of my boys was in the PICU after crashing due to an infection received in the hospital that went undetected after we were released, and she was there for me when I pluged headfirst into the abyss of a severe postpartum depression. She heard me scream obscenities at her son when he made an unfortunately timed comment that I totally took the wrong way in my depression/pain fog, and she ran over to wrap her arms around me and calm me down and protect me, however her mama bear instincts must have reared up for DH as well, she was also willing to protect me like her own.
So I am hers, too.
I don't know that I am as good of a person as she is, but if I can be half the role model of MILdom as she is, I'll be freaking happy with myself. And I hope she's still around when/if I become a MIL, so that I can learn more from her.
ETA:
The closest adult child/parent relationships I've seen tend to be almost exclusively son/mom. I've seen a few very close daughter/mom relationships, but that tends to come later in life...the good son/mom relationships tend to be more uniformly good over a long time. Though I think sometimes it helps if you're a mom who "gets" her boys, and doesn't expect them to be like girls. Or I might just know a lot of weird people or something.
