How diablerie works in V5 (and how it possibly relates to Phyre)

[Clever Name]

Apologies if some people have already discussed this and it's very obvious to them; this post is more for those who aren't well-versed in the rules and lore.

I was reading the V5 corebook the other day, and I paid close attention to how diablerie is described.

In a nutshell: if the diablerist succeeds in draining their victim (i.e, if it isn't interrupted), the victim's body dies and turns to dust instantly.

Only then does a mental contest begin, wherein the diablerist can lose control of their mind and thus become the host body to the mind/spirit of their victim. While V20 hinted at this possibility, V5 actually codifies it in hard rules.

Phyre's name (including the spelling) and styling would indicate that she is probably a modern thinblood who diablerized an elder named Fabian, destroyed his body in the process, and subsequently lost, or partially lost (as the plot requires) the mental contest.

The runes on her body were probably part of a thinblood alchemy ritual, or something similar, designed to help during the diablerie.

The narrative will probably be designed in such a way as to confuse us; which ideas and memories are coming from which mind/spirit. Even if Fabian is depicted as the one who knows 21st century technology and culture, that doesn't mean it's true. Phyre/Fabian won't understand where one ends and the other begins.