Breaking Mommy Dearest - Moving Forward

So I've spent the last two weeks analyzing my relationship with E-Bomb.  She has no idea what's been on my mind because, well - Get over it.  Stop analyzing it.  There's nothing wrong here.  Maybe I haven't come to any real conclusions or solutions to my little problem, but it has given me insight on moving forward and the future of our relationship.
I am saddened by the fact that things have to change, something has to give and I have to be the one to initiate it.  She is too stubborn, she is set in her ways and like I've mentioned before, I don't have the energy or patience or even the will to change her.  She's made her choices, she's established who she is in the 50+ years she has spent on this earth.  Now it's time for me to make my choices and to establish who I am because I'm already 30 years behind.
The one conclusion all of us have come to is that deep down, E-Bomb is sullen because she's lonely.  But that won't change if she doesn't change (We have all noted at one time or another that she's not going to find anyone if she doesn't become a little more open minded and she has proven time and time again that she refuses to.) 
If she wants to find a companion to live out the rest of her time with, then it's on her.  I'm putting down the burden of trying to explain how things work these days.  I can't help that she spent half of her life married to my father and that she endured more emotional abuse than I want to even think about.  They had been separated for four years and Pop has been gone for three.  She claims she is ready to move on with her life, but her feet are encased in emotional concrete.  If her own children, her own siblings or her own friends can't help set  her free, then obviously it's left up to her.  We've done all we can.
All I want is to see my mother happy.  She can claim her life is grand until she's blue in the face, she can continue to hide her true feelings and emotions all she wants, but we all know she feels something lacking.  And there's nothing we can do about it.  I cringe every time I hear her say to a friend, "Don't they know anyone who's single?"  I cringe because even if they did, that person would not live up to her standards.  No one can, and until she realizes that things are a lot different these days - that people as a whole have adapted to changes in society and have learned to accept the bad along with the good, she's going to remain lonely. Her knight in shining armor is not going to knock on the door on a weeknight while she's sitting at home.