The BridesEscher&Rahadin
Any further interactions she'll try to get the party aid her current goals and undermining the other brides. Her identity and the other bride's identities as vampires stay hidden until the Dinner with Strahd.
After her identity has been revealed, she does not care for the party and she knows she is too powerful for them to pose any threat. If interaction is necessary, she is open about her desire to please Strahd and how dangerous the other two Brides are. She won't do them any harm if they don't cause any harm to her.
Volenta's Mask requires attunement Allows the wearer to detect any creature with a heartbeat within 30 feet, can only be blocked by more than a foot of stone or lead. Gives the wearer advantage on stealth and intimidation checks. Cursed only revealed post attunement: The wearer of this mask is cursed with a bloodlust that can only be sated by blood and murder.
requires attunement Allows the wearer to detect any creature with a heartbeat within 30 feet, can only be blocked by more than a foot of stone or lead. Gives the wearer advantage on stealth and intimidation checks. Cursed only revealed post attunement: The wearer of this mask is cursed with a bloodlust that can only be sated by blood and murder.
Escape:
Enemies retreating when the party worked hard to get it low can be frustrating to players. They spent time and resources but didn't get anything permanent. They may be inclined to chase after the Consort if they can or if you described the vampire within in running distance.
Death:
Strahd's allies are hard to kill and hopefully never go down so they can help in the final fight against Strahd himself, but in the rare scenario that one of Strahd's consorts or Rahadin dies, something needs to happen.