It was...weird. It didn't fit her character. To me, throughout the game up to that point she had come off as the more conservative "wifey" type that I generally go for (and that I like IRL as well - I prefer prudish, conservative, trustworthy women in a general sense for relationships) and I still like her, but it was a strange scene that felt out of place. When I filled out the feedback bit at the end of the chapter, I had mentioned that it was strange - her and the MC hadn't even kissed yet IIRC, and she goes right from a massage to a weird BDSM style blowjob...it's just odd.
Now I will say I'd be totally cool if things had developed more vanilla initially and then later she disclosed some of her kinks to the MC - everyone has them, and that's cool. I think it would have been kinda hot if, after they'd been intimate for some time in-game she was like "Hey MC, I'd kinda like to experiment a little...what would you think of me tying you to the bed for some fun? Or maybe you could start putting me in a chastity belt and controlling my access to pleasure moving forward?"
The more experimental stuff can come later once the two people are intimate and have established a more solid relationship. That's always been my relationship process with women and has worked well - establish the normal intimate chemistry first and once that works well, you can start looking into anal, having her wear outfits for you, etc.