First from what I can tell you seem like a good dude. Second, the fact you are on this site, says as much about where your mind is at, etc.
That being said, and I want to be as supportive as possible, but you moved in with her. That speaks volumes bro. Women need to feel security, all kinds of security, physical, financial, etc. Unless its your home or both of you moved into a home together, its really tough to get a woman's full respect when you are moving into HER home. The only way that works in your favor in terms of how she sees you in her eyes if you are footing the bills.
If she owns her home and is paying the mortgage its even moreso. She will not see you as a provider. Maybe....maybe if you are paying the mortgage or most of it. If she is renting, similarly so. Maybe you are, but its still HER home.
Also, women look to see if her man has a plan. It may not be the best plan but he has one. Admittedly, I don't know your situation but she will make a full assessment of her man, any woman will. Does he have a decent job and if not, is he in the process or planning to do better? Is he handling business now? Meaning, he's taking financial leadership, emotional leadership, etc.
48 and single for a man is not a big deal IF you got your sh*t together. Good black men at almost any age are at a premium. My advice for what its worth? Take a full assessment of yourself. Be brutally honest. If you have a trusted female relative or homegirl and you give her total freedom to give you some hard truths, and accept the critique out of love, then you may wanna do so.
You are telling us your side, but my guess is she will add some missing pieces to the puzzle that will put it all in its full view.