User blog comment:LovelyLevy17/What happened to Future Levy?/@comment-26389992-20170113172525/@comment-7418318-20170114000537

Just as Misk said, she was (as far as we know) the sole survivor.

But with 10.000 Human killing/devauring Dragons on the loose, I don't think she would have survived for long. Sooner or later they probably got her and she joined the rest of the guild on the Golden Plains... though obviously after F-Lucy got there, since as Misk said she wasn't in that picture.