Taken from the Dark Shadows Resurrected book:
Post Script
After her return from 1790, Victoria was unable to clearly recall her experiences from the eighteenth century. She did, however, retain fragmented which alternately fascinated, puzzled, and haunted her. She resumed her romantic relationship with Barnabas, who remained fearful that Victoria's knowledge of the horrors from 1790 would someday resurface and jeopardize their future together. (based on projections for a second season)
It kind of bugs me that they were going to go the same route of her just forgetting her experiences. I really loved the fact she found out he was a vampire and I think that would have made it more interesting if she knew.