>>2749051Madoka respected the wishes of all magical girls. She did not want their wishes to be in vain. That is why she worded her wish like that. If Sayaka can use both witch and girl forms, then it should be assumed that all magical girls can after Madoka takes them away. Nagisa is not an oddity.
But that is a discussion for /a/. Post cute Nagisas here at the very least.