Things are basically gonna be the same until the bite. my chart looks a bit like

-Bite happens (preference on who is gonna be the biter?)
-RUN + fall
-meet Robin? If yes, she meets up with Robin, Robin isn't being helpful bc he knows so she tries to get away from him to find actual help (that scene and his sketchy ass dialogue is important to her realization near the end) (maybe actually trying to find BB bc she Stronk)
-OG Vamp who was the biter goes to fetch her
-BB drops in and escalates situation bc that's just how she be sometimes
-bc of escalated situation, Di takes another tumble bc of her bad ankle, maybe hits her head or st? Enough to make her on the cusp of a blackout (sorry BB u always gotta make things worse)
-is like "hey don't straight up merc that guy"
-instead of throwing hands like she usually would BB tends to Di
-Di only half in it is like "You're coming with me right?" "You'll be there with me" and BB reassures her that she "Won't leave her alone" Maybe BB is the one who's like "vampires lol they fuckinnnnn suck"
-Di passes out
-When she comes to, she's at Soleil's. He's treated her, and has just tried to bite her.
-Hubub ensues "why did you bite me oh my god" robin there (?) or "default" vamp, Di like DUDE WHAT THE FUCK. explanation stuff that's in main route. "why didnt it work" "cursed blood lol"
-Leaves off on doctor saying "someone just left you here" + robin/vamp being like "Catherine/that fuckin chick made sure we were with you"
ALTERNATIVELY
-scenes with Di in/out of consciousness hearing Doc + BB + Robin and/or vamp (?) arguing about whether she needs to be bitten or not
-BB absolutely fuckin does not allow that bite to happen and so when Di comes to the doc's like. well. here how shit be.

-some token left with Di? idk what BB would have to give but i can think of something in the interim

im adamant about BB not being there in the ultimate end though bc of course she's gonna blame it on herself and be like....... i can only hurt ppl bc im DAMNED to HELL it was WRONG to make FRIENDS