how?

In a deleted scene of revenge of the sith. Grievous stabs her in the gut while (I think) Anakin and obi wan are watching.

yeah, and then in another deleted scene she was stabbed in the back by anakin (literally), and then in The Clone Wars she was stabbed in the back by anakin, in the lego game she was stabbed in the back, and in another video game she comitted suicide. so basically, shaak ti is immortal.

Yup lmao