Angelique in 1795 and in 1897.
In 1795 we get to see her hand at play in the fate of Barnabas Collins and the future of the Collins family.
1897 because it's the first time we see her actually "team-up" with Barnabas in an attempt to do something for someone other than herself. I'm not saying she was a heroine, far from it, but she did help out a bit.