If I could tell you precisely that she will get her feelings back in 7 years, 2 months, and 3 days from now, would you be willing to wait?
The point is that she may get them back at some point, but do you really want to continue wasting your life waiting for it? In my sitch, at the counsel of a wise anti-D expert, I set a 1 year past BD limit. At 1 year if she wasn't fully committed back to the MR, then I would go file for D. 1 year may not be right for you (since it has already been 1.5 years!). Maybe 2 years is. Maybe 5 years. Maybe 9 years (based on my hypothetical above). But you have decide when enough waiting is enough. And then you have to move forward with your life and quit waiting for someone else to decide your life for you.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018