The text says the blue hair girl is Liese (Lieselotte Achenbach from Arcana Heart ?).
I doubt that the Maid is Sakuya too. Unfortunately, I don't know MUGEN so I can't confirm it.

ddd666 said:

The text says the blue hair girl is Liese (Lieselotte Achenbach from Arcana Heart ?).
I doubt that the Maid is Sakuya too. Unfortunately, I don't know MUGEN so I can't confirm it.

Considering Sakuya usually has silver hair as opposed to this maid's black hair, I rather doubt it's her as well.

TwoGunAngel said:

Considering Sakuya usually has silver hair as opposed to this maid's black hair, I rather doubt it's her as well.

She's monochrome, so the hair color is questionable. Let's see...
Hairstyle: Twinbraids. check
Clothes: Dress, waist apron, shirt with puffy short sleeves, headdress. check
Behaviour: Nosebleed, taking pics. check
Object of desire: Remilia lookalike. check
I'm pretty sure it's Sakuya.