"Her true feeling leaked out unintentionally..."
huh? This is the first time other than piss was leaked out of her...
Also, considering how MC's smashes her common sense in the early chapter bringing ruin her image of being a pretty babe or a princess by pissing out of fear or else, by sensing a jolt out of her body, which she can think of those time of leaking out, she will feel hopelessly thinking of MC. That body sensation of her maybe comparable to bridge suspension effect, in a leaking manner...