Well if you check the promo her left arm is on and on this picture it clearly shows that she seems to have a right arm too so perhaps it was stitched back, yes, the way Madison did it herself to Kyle. Ironic right? She was the one who needed to be sewn back now.
And if you look closely, and I don't know if this is my imagination or just some wrinkle on her neck, you can see the mark where her throat was slit.
And she clearly ISN'T dead. When dead in Spalding's room her eyes were closed, now they're open. Clearly a dumb but an obvious proof, haha. Can't wait for Wednesday! Still I think that we will have to wait until chapter 7 to see her back in action? Perhaps she will be resurrected near the end of the chapter.