Board Thread:General Discussion/@comment-24674051-20150420171129/@comment-2153169-20150421143219

GothicNarcissus wrote: The writers have shown us her charade is not flawless. Robin has been perplexed a couple of times, and "Marlena" heself told Gold that something in their emotive connection isn't quite working. Besides, most of her time around other people who could have known her beside her family, she spent frozen. Add in the presumable stress for the aftermath of the spell, her moving to a land completely different from her native one and of which she does not even have fake cursed memories, and it should be no surprise to Robin that she's not quite herself "yet".

I think it is prolly one of the best explanation I read on the wiki :D