@TonyTenner - You really need to look at yourself in the mirror because you're a problem in this whole thing. You're 37, she's 32. That's a solid age difference. You also say that she's elite level in looks. A 32 year old, who is childless and elite level in looks, is a solid option in life. At 35-37, it's very difficult to have a girlfriend in her mid-20s, so 32 is a solid option.
I'm not sure how long this has lasted, but this definitely seems like less than a 5 year long relationship. It probably hasn't even hit 3 years either. If you two were past 3-5 years, there might be some natural decay there, and your thoughts would likely be more understandable.
She's likely the best available option right now, especially given the pandemic and how difficult it is to start something new. I don't think you need to be thinking about dread game.
I'm not excusing her behavior and saying she's perfect. She's not. She likely has some faults, but they seem to be manageable.