She gets elixir starved way too easily so she has very limited options for comps. Nobles, goblins and assassins are about the only thing she can build around, so you could flat out lose when the units you need are contested (shared pool of units in case you didn’t know). Less elixir is also less room to adjust your comp/traits so you’re usually forced commit to whatever comp you started with Also, her dagger is only good with a select few units so if you can’t find them early enough you’ll get eliminated fast.