To me, it was her plea to have Maggie (i.e., "Victoria"), her own reincarnation, to help rectify the tragedy that happened 200 years previous so she and Barnabas could be together again.
I loved, loved, LOVED, how Burton paid complete homage to the original by making Maggie Evans, not Victoria Winters, as the reincarnation of Josette in the film. And yet he brilliantly incorporated Vicki. In the '91 version, Dan Curtis jettisoned the original; apparently, the '04 did the same as well. But Burton stuck with the original. For those who hated the film, he was more beloved of the original than they were.
Gerard