On a regular basis Integra doesn’t drink. She doesn’t drink socially because she doesn’t socialize, and she doesn’t drink to relieve stress because she has cigars for that. As such, she wakes up after this party with a massive headache, gaps in her memory – and Alucard’s coat.
I like that first panel. It’s the most relaxed she’ll look for the rest of this storyline. Integra: … Integra (thinking): Uh-oh.