only her I think, due to living for a long time as a skeleton? I need a reread
Basically that and the fact that she's somewhat shy too, I more or less covered that on another chapter when someone also wondered about Angelica talking (that was a few chapters ago iirc)
She spoken a very handful few times
The first time she actually spoke was when both she & Haruka returned to the forest, to his hideout base there to refurbish/clean it up a bit
The 2nd time was probably some time after 'liberating' Dancing Girl/Nefertiri
The 3rd-4th time was probably between Sleeping Girl & some previous chapters ago
And this being either the 4th-5th time she spoken once more again
Overall, she mainly "speak via gestures" but the few times she actually does speak, usually is around Haruka or related to him in any way, she doesn't speak too much but what she only wanted to convey