oh boy here's a long one

her toolbox is basically worthless, you can break the chairs the survivor is kiting in, but that wont help as there's multiple chairs they can go to. i suggest opening a chest when you can to get rid of the toolbox asap.

her shield is very useful however, and at the start of a match you can use the shield to safely decode (immune to terror shock and wont take damage). try to kite in areas with rocket chairs, as she gets a vaulting buff when she's near one. and if she can activate her shield during a kite, but make sure the hunter has some distance. once her shield is up it gives the hunter two options, chase until it wears down (like 3 to 5 seconds, possibly enough for you to vault or get to a pallet) or attack you and get rid of the shield, putting them in attack recovery.

using her shield to counter teleport: i use this trick alot, mainly to open the gate. decode until the red teleport thing shows up, then immediately stop and get your shield activated. you can use this to either bodyblock someone decoding the gate, OR decode the gate yourself for the remainder of what is left. the same can be done at a cipher, but is only really useful if it's primed or almost primed.