Yeah but if she's discovered she loses the only place she ever considered home
Plus let's not forget he's the king of the underworld,she's smart enough to know lying to him won't get her very far
So, she's a coward now who can't bear with it until she finishes her mission? There is no other way for her to get it anyway, she can bear with it, also she's living well, so there's no "bearing" she'd have to do.
They never discovered her until now, highly unlikely they won't, and he probably knows already anyway, he is the master of that place after all.
calling her a coward isnt the word many things would go wrong if she keeps staying and she is aware the fact the lying to him wouldnt get her killed at best, at the end she found out the holy kingdom is her enemy, so she’ll stay to find out obv. but staying in the mansion is like suicide.
Nah, staying is easier since she could still act like their kid, it would give her protection and she could go to the holy place without being treated as a heretic, and her kid form will make others belittle her and not care if they spill secrets even