Hello, Mame. Thanks for taking the trouble of reading the whole read - takes some patience, I know.
To answer your questions:
She actually does (or did) approve of me as a DIL. In fact, B had to battle his parents to marry me because of certain important factors that I've mentioned elsewhere. She traveled to the US to dissuade him from doing so, met and interacted with me, said she "fell in love too" and finally gave us her/their blessing. In those early days, I didn't truly 'get' her. I was completely at ease and myself. She & I actually really got along. I thought she was the cat's meaow, I'll admit it. Slowly, her real self started coming out. Once she gave us the 'go-ahead' for our marriage, she began to act as though she owned me. She is self-admittedly a little obsessed with me. I don't deal well with that. That's how it all started going downhill - with my little and then large rebellions against her possessiveness. Then the wedding happened, and soon M came along. And she started couching her possessiveness (with me, with M) in 'Tradition'. And I won't have it.
That's background. To directly answer your question, she would 'approve' of me now if I were to constantly shower love & affection on her, call everyday, consult her on every aspect of our lives - basically, make her feel important. Except that it's like a black hole, a bottomless pit - her need to feel important.
Your second question. I actually had not considered this because I don't necessarily consider myself as strong. I think I'm a bit of an escapist - would rather just not have to deal with things. But I suppose you've got something there. She
may feel a little powerless, and I know how batty that would drive her.
Thank you for your kind words, Mame. You right, people here have been just incredibly supportive and that helps a lot.