As in the manga, Seras has a gift for walking in at the moment of maximum humor.

Alucard: It would seem that the fangirls are entering our world via a portal somewhere in this room.
Integra: Nice to know. Now get up.

Alucard: Oof.
Integra: Ouch! You’re hurting me!
Alucard: My deepest apologies.
Integra: Just keep going.

Seras: Oh dear…I hope I’m not interrupting anything…
Fangirls: It’s a gratuitous chibi moment! Yippee!