In our fleeting glimpse of the grave marker, I read "Jiaying <lastname partly obscured by leaves>" -- Daisy's mother. No wonder she recognized it so quickly.
(I just now looked up her last name. It was "Zabo" -- if like me, you were wondering.)
Daisyis already skittish about using her Quake-power, but I imagine she'd be even more cautious using them around the body of Jiaying, whose powers included life-draining/regeneration/possible immortality. As I recall, Cal defeated Jiaying off-screen, sparing Daisy who had been locked in a mortal power-battle with Jiaying. I don't know how he killed her, or indeed, if he actually did. Jiayang may be trapped alive in her burial vault, unable to gain the energy to regenerate -- much as she was when Cal found her in a ditch, after Whitehall had discarded her "dead" body. After Cal's best medical/surgical efforts, he still had to take her to a village in Hunan, China, where she sucked the life out of the entire village to achieve the stable form we saw.
Edited by Orpheus, 30 April 2018 - 01:21 PM.