to be fair cypria is not actually a priority either. Most of us kinda ignored her , but after AW and SAW she becomes a good dodge tank , but untill then , most people use either valks/pricesses/bandits as duelists. Most of us didn't raised her because shes kinda expensive to cc (3 silvers) , but since it's there , u could use it now. You might want to replace her with another unit in the future
I might even use a claduia , even at max cost over cypria if i were u , assuming u lack other princess. She still has a good skill for tanking liches/mages and for dealing with high armor (and mr stuff) even if u didn't leveled her skill much. She still gains mr and true damage even if her booster isn't that big