Then stop doing that and fight her properly.
I’ve taken her down with ultron without issues.
I’ve taken her down with ultron without issues. OP is talking about AQ Boss peni, not EOP!
Apocalypse works well against Peni, he can parry her consistently and his heavy will take her down. Just need to pay attention to her shield to avoid power burn and stay agile to dex the SP1 and block SP2