I wouldn't try again. She showed you where she stands by ignoring your attempt. I've been in her shoes and didn't bother responding either. It had been about 5 years and I'd moved on with my life and didn't have any desire to bother wasting any more time on someone who randomly disappeared on me when I didn't do anything to deserve that. No point opening the door to become friends with someone who proved they didn't know how to be a friend in the first place. As hard as it may be for you, I think you should let it go. If she wanted to talk to you, she would've.