In the book "Steve Jobs & the NeXT Big Thing", shows a bit more nuanced point of view.
She might have been against, but apparently many on the team were pretty much in favour, as Xerox already had a sharing culture with Standford people that would drop by, even without permission, which lead to drastic changes in Xerox PARC security.
I still need to read that, as the episode about NeXT is coming soon.