I am not so sure how to reply, since I have never been in the situation before.. But, were you desperate enough to sell her to the next one to ask? That happened rather suddenly I think. I feel REALLY bad though, you can't blame yourself for not being able to work lola when she wasn't compatible with you. I understand how crappy you must feel, but, I kinda wish it was the perfect situation for you and you sold it to someone close to you. Unfortunately, that isn't how it seems to work in the horse world.
I am sure she will be getting the training she needs to find herself a compatible rider who will give her a good home. If she doesn't get the training somehow, weather it had been from you or someone more experienced to handle her, she won't be able to reach her full potential. That's if the man you sold her to meant well.
I am very sorry sweety, I can't possibly understand or feel the same way that you do. But I do hope that you will get through it somehow. And I pray that lola is in good hands.
"All we see or seem, is but a dream within a dream..."