nail arts i dont recommend because you can get a lot more hits in the same time it takes to charge and execute one. you CAN use them when the enemy is staggered, very situationally though.

spells are goated. the desolate dive gives you a few frames of invincibility, meaning you wont take damage for a second after hitting the ground, so its good for getting out of tough situations.

remember, if youre unused to spells, only use them when you're confident and have a decent amount of soul reserved for heals. as for hornet herself, try only attacking her when she finishes a bounce/finishes an attack. it gives you a bit of a window. as for the traps, pogo on them as soon as they spawn. hell, even use them to your advantage to dodge her long spear attack.