I can see where your coming from, alot of people grieve outwards and cry their hearts out. Other people grieve inwards, crying inside, and feeling nothing.
Talk about it with someone you love. Tell them you are having a problem expressing they way you feel about Nana.
It's not wierd or strange for you not to cry and nor is it your fault your reacting this way. No one can take death easily, and by not crying, thats not what your doing.
If anyone wants immediate advice don\'t hestitate to contact to me on AIM (AOL instant messenger) - aim: vodkasmodka
Eccentric! Not egocentric!