hmmmm
So. We don't know (for sure) if she feels for you like you do for her, right?
She's blocked you and hasn't reached out. It didn't sound like you'd been dating or otherwise very close together. To me this sounds like she had a similar response like mine mentioned earlier (dynamite). I wouldn't count on her coming back if she did.
Most relationships like this I've helped with or observed ended 'dramatically'. And often if you're afraid you're going to lose somebody, guess what... you're gonna.
This isn't only a self-fulfilling thing (though it's that too). It's also a passage-of-time thing. People grow, change, wisen-up, drift apart. There's no promise that the person you imagine you'll be after your ashes clear will feel for her or the person she is after her ashes clear. It's possible don't get me wrong, and depending on your relationship maybe even likely. But not a guarantee.
Also. Entering a relationship like this doesn't mean you'll come out the other end wiser and stronger for it. It can; it definitely has that alchemic potential. It really depends on, after the dust settles, what you do.
Which is to say, do you keep believing you'll never love like that again?
Do you reach for the past again and again?
Do you hold the time you shared as flawless? etc.
In other words. If you idealize the past then you're holding onto that past-you - the you that you have to let go of in order to move onto the next stage of your life. The past (or present?) you isn't a bad person, and in a sense that part of you will carry on, but in a new way.
It's like that puzzle again. It'll have the same pieces but there won't be holes missing because you'll have realized how to rearrange it in a new way. The key isn't having a flat border with blank spots inside but no blank spots inside and spots to add things onto the border (if that makes sense).
The good news. Sometimes these relationships do work out, and even if they don't it's not impossible to find one that can be just as fulfilling. I won't say it's commonplace but it does happen. It won't be the same because you won't be the same person and neither will they, but that won't make it inherently lesser. It may still be fairly intense and magnetic, but (possibly?) you'll be better equipped to handle it.
What's more is, you could grow a lot as a person and that's never a bad thing.
Why do you think she may get back to you?
Please be careful about this. It comes from best intentions but is also key ingredients in disaster-cocktails.
This is you stepping into a parentlike role which, if she mimics your feelings, may push her into a childlike role. From there things will get messy and it'll be a fun rollercoaster until it goes off the rails.
(it's also mildly patronizing but that may be the least of your concerns)