Maybe, but it seems to me it was just her behavior in "public" place, while at home it's the opposite. This is an extremely strange family - that's what I'm 100% sure of. An adult 20+ years old guy who calls his adoptive parents "mommy" and "daddy" is some kind of fucking cringe.
In EP9 it was mentioned that Stephen choosed Tybalt, while Jade choosed Sage.
Jade doesn't like upstarts and mentions that Stephen "bought" himself a professor title, while she achieved everything herself. It's the same with Tybalt and Sage. Tybalt is a daddy's son who is pampered, bought everything for him, allowed, to whom he cries, etc. Jade is disgusted by his behavior. Sage, on the contrary, achieved everything herself and even abandoned the "noble" surname.
When Tybalt tried to tell her how MC was bad to him she figurally told him to fuck off. Same with lewd scene, when MC fucking her and Tybalt almost catching them. She probably often talks to him this way and Tybalt seems to be used to that.
Code:
$ currentFreeRoamLabel = "ep9_diks_ph2_lib_mid_label"
if "ep9_diks_ph2_piss_event_label" in event_list and "ep9_diks_ph2_ssolo_event_label" in event_list:
if renpy.random.randint(0, 5) == 3:
$ currentEvent = "ep9_diks_ph2_piss_event_label"
jump startEvent
who is more familiar with renpy - could tell the percentage for this scene to appear