Honestly I agree with a lot of people here that Ruca is being done in a pretty bad way. You only really get two modes with her, dom or sub, and both are kind of turn-offs, which are compounded by her also being kind of a bitch. Despite these failings, for some reason the dev seems to be focusing most of their attention on either her or June (for real, show Angie some love already, she's clearly got the makings of best girl).
If so much time is being invested in developing Ruca, she needs to either have a middle route between sub & dom, or at least tone down her shit personality. The non-sub version of the massage scene was a step in the right direction, being actually affectionate and neither sub nor dom, and I hope there's more scenes like that in the future. Contrary to belief, it's entirely possible to write a good character who's entire being isn't defined by a kink.