Hey we don't know that yet. With Koharu having seeminly no impulse control and Mone being apparently fairly conciliatory when it comes to behaving in a societally acceptable manner, who knows what'll happen.
Side note: on page 19, Koharu say's she'll be Mone's「身元引受人」(romanised ‘mimotohikiukenin’, which is a lot more difficult than the Kanji), which is here translated (as it seems to be defined in Ja->En dictionaries) as ‘guarantor’. A mimotohikiukenin is in fact someone who's a guarantor, but it's someone who's guaranteed a very specific thing: to help keep someone they're close to out of trouble after they've been arrested.