Well, don't they all come back at the end? Once Eponine and Fantine lead Valjean to Heaven, they are joined/greeted by all the deceased (e.g. Enjolras, Gavroche, students) in a final rendition of "Do You Hear the People Sing?"
And I gather Eponine is there for Marius, if this picture is any indication. Fantine is reaching out toward her daughter, and Eponine is reaching out toward Marius, like they're sending good vibes or something.
Salve, Regina, Mater misericordiae
Vita, dulcedo, et spes nostra
Salve, Salve Regina
Ad te clamamus exsules filii Eva
Ad te suspiramus, gementes et flentes
O clemens O pia