let's actually look at this voice actor pay thing
from what I see googling around, records on how much voice actors are paid are extremely hard to find, almost like a closely-guarded secret, game voice acting is in a weird place where there's a union but also they're all somewhat freelancers and on their own
but it seems like in general, a game voice actor (as opposed to narration, audiobook, commercials etc.) can expect $850 for a 4 hour recording session
so offering her $4000 is asking for 4.7 four-hour recording sessions (18.8 hours of recording)
is that long enough to get all the dialogue for a video game of the type that bayo is? I want to say...probably yes?
if you strung together all of bayonetta's voice lines in bayo 2 back-to-back, I'm not sure how much time it would take up. searching for "bayo 2 longplay" gets you 6 hour videos, searching for "bayo 2 movie all cutscenes" gets you 2.5 hour videos. outside of cutscenes, there's plenty of random lines and grunts and yells that go into a game as well. some of it they'll think will make it into the game but might end up left on the cutting room floor, too.
if we're generous, we could just assume bayonetta has 3 hours of finished dialogue coming out of her mouth. imagine that every line has an average of four takes in case she flubs it or wants to try it a slightly different way, so that's 12 hours in the booth. with the 18.8 hours figured above, that leaves 6.8 hours for the director giving directions, or breaks, or random wait times and adjustments.
does that seem like super out of the question? how much should she have gotten instead? did jennifer hale say "hell yeah I'll do it for 4k, that's close to my standard rate, cool?"