Probably wet herself as well, good thing her skirt is made of water. I also just noticed that katalina's mask accessory looks the same as that mech's face.
As a matter of fact, yes, yes it is! ...I should have explored Danbooru before carelessly uploading this pic... Then again, I'm not even sure how Danbooru let me upload this image. They're completely identical, even the size! Normally the site says it's already uploaded when that happens.