I just read your post and all the comments. I am always unsuccessful in terms of relationship. I was very immature ,at age of 21 i ended up my 1.5 yrs relationship for other guy( I did not left him for money or looks, but i left for the reason that he never understood me and never listened to my opinion). I really don't bother to admit this, because i did not cheated him and i told him the true reason of leaving him. I was so dumb that i cried a lot and spent many nights awake when i broke up with him. My relation broke just because it was fault from both sides. Its fact that it never breaks because of just one person.(But if its true love from both sides, no matter what it never breaks )
I just love the idea of being in love and get into love marriage..lol. Sadly the boy for whom i broke up with first one, left me all of a sudden. I went through severe depression, bcs i thought this love of mine is for my life, but actually nothing happened like that. I thought may be my sins paid off...and i went through the same.
Here you asked one question that will she miss you in her bad times?...I have and answer, yes she will...
From my personal experience and natural human tendency, she cant forget you for rest of her life...but yes if she has ended up a 10 year long relationship..she wont come back. But 100% sure she cant forget her first love.
These things happens now a days, those who goes let them go and those who comes back are only the true ones. Don't wait for her, have faith in yourself and what matters is the present so focus on that.