I screwed around with the modded version a bit and lowered her love score while keeping her obedience and inhibitions high - doesn't ultimately change all that much (in the end she calls you master anyway, even if you are lovey-dovey with her ... just like Kitty will sometimes 'upgrade' you from boyfriend to friend with benefits ... the threshold-system sucks ass imo), a few lines and of course she looks sad most of the time..
(to be perfectly honest, i dislike that 'route' as I like both Rogue and Kitty .. but every now and then Rogue and her 'demands' to do stuff can get annoying .. soo...)