doing 2needles and a silkspear after hitting the lever makes greeding this quitout kinda free i would still recommend trying this a few times in ils to get a feeling for it (i dont wanna be blamed for quitting out too early :buh:)
i am not to be held responsible for lost paces if you are doing this without practice in runs
you can VERY easily fit in a spear in this vulnerability window for widow instead of a nail, i havent missed this once in runs, the window is very large. particularly useful if you have 8 silk because it allows you to do another silk spear when she spawns in for her second phase
Apparently you can hit widow for a short period of time slightly after the fake death. Im not sure if you could slash twice with good timing or maybe fit in a spear or smth. Regardless, there's no reason to not slash her once at the very least.
If not going for p2 scream skip you can do this setup of 5 needle hits into spear on 6 to get a free spear when she comes back. Works for a dash attack too if you don't have enough silk, but it's harder to get reliably, worst case you end up right next to her so you can start hitting asap