@KamiKira00 :
>If she was able to keep 5(if I understood correctly) branches alone
No, there was Aria's minions which should've been the majority of the forces of the dungeon, the 4 are probably something akin to roaming boss monsters that patrol the areas.
Which, as stated in this chapter, was way too much area for them to be covering.
The dagger was from the 2nd gravekeeper, she didn't have any weapon on her (I'm guessing her ability require damage by the opponent's magic/weapon to work, which mean if they use 'her weapon' she might not be able to use her ability)
>inability to fight without getting hit
Her ability benefits from taking hits, the lack of revival option just means she couldn't take a lethal hit (healing magic exist)
And given she laughed at the wounds she took in this chapter, she either does not feel pain at all or get pleasure from it.
Either way, it means that while her opponent will be suffering from the damage her ability share to them, she isn't hindered by it and can just go for a killing blow while they're down.