Crossovers that shoould be: beginings of Sub Genius

[Shepherd]

Huh... i was just reading a BtVS fic, and misread a line where Joyce was going to "head out to the Gallery" as "head out to Gallifrey."

Joyce Summers is secretly a Time Lord? Discuss! Since The Doctor himself is half-human on his mother's side, at a minimum it would mean Buffy should have regenerated in the Master's cave and after jumping to close Glory's portal, but otherwise? Hmm, would she even remain a Slayer after regenerating, or would they have to find other technological or magical measures to combat the things that go grr in the night?Can you keep a vampire at bay with the high-frequency emissions of a sonic screwdriver, like those "sonic fences" for dogs?

- CD

Well, if the Doctor is a Time Lord despite being half human, it is possible that Joyce is also a half human Time Lord. That would make Buffy roughly 75 percent human (depending upon precisely which chromosomes she inherited from Joyce). Thus, it is entirely possible that Buffy isn't alien enough to regenerate, although I do recall that, once Xander performed CPR, Buffy did proclaim that she felt "strong" and proceeded to crush an opponent who'd easily defeated her less than an hour earlier.
On the other hand, if Joyce is capable of regenerating, that opens up some interesting possibilities. When Joyce died in the original timeline, was she already on her last life or did she have some regenerations remaining? Did she even know that she was a Time Lord or had something affected her memory? If she didn't remember, did regenerating restore her memory? Since I'm not too familiar with Doctor Who, how long does it take a Time Lord to regenerate? Enough time that Buffy still would have found her body on the sofa or would she have walked in to find a stranger wearing her mother's clothes? If it takes long enough, would Joyce have woken up in the morgue at around the time Dawn was getting attacked by that vampire?
Also, how would you explain the doctors who performed her brain surgery not noticing that Joyce had an alien anatomy? If they only examined her head, I can see them overlooking some issues, but don't Time Lords have obviously alien circulatory systems? I'm sure that the heart monitor they must have had her on during surgery would have been a giant red flag. These sort of issues would have to be addressed.
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"Anyone can be a winner if their definition of victory is flexible enough." - The DM of the Rings XXXV