[Levelling her with a sceptical look, Walter addresses the Draculina in a tone not unlike what a parent would use towards a child in need of a scolding.]

Miss Seras, you're stuck in a small facility with a large number of people jammed all close together at certain times of the day. Is it such an evil thing to ask for assistance before you actually need it?

[Which might sound hypocritical of him, given how resistant he was to help when Seras first found him. But in his mind, it's different; he isn't a vampire that could lose control of his thirst.]