Kinda hard to take the netorare seriously when she's perpetually flashing her cow tits from minute one, like if that's your thing that's perfectly fine, but it needs more of a sense of progression. Like, okay, fairies have a different sense of modesty or lack thereof, but come on, the MC never insisted she get a shirt that at least covers the nips?
If it's still possible without a ton of work, I'd suggest you shrink the tits a bit to something more reasonable, change the outfit to something still scanty but more fairy-like that doesn't show her nipples, and then later in the game have the bull manipulate her into traps or something that expands her breasts and brings back the slutty outfit. Maybe have her secretly find a 'cure', but if she's corrupted enough, she keeps them to please the bull.
If you're going to change something, though, it's better to change it as early as possible before it requires a full rework.