My 19 month old is very advanced for her age, other than her language which is on track. But she’s already entered her “terrible” two phase and she hits and pulls my hair and laughs about it. I spank her bottom and tell her “no hitting” she laughs about the spanking and hits again. I put her in her crib for time out (about 4 minutes) she gets out and hits again. I’ve tried the simple grabbing her hand and saying “no hitting mommy” she laughs. How can I discipline a child who laughs at every punishment and continues misbehaving?