The poster said narcissistic, they did not specify mental illness.
A freezer spell is not what I would do in order to try and change someone's behavior in this way.
When you perform a freezer spell, you are either 'freezing' someone out of your life or holding their activities in stasis.
I would recommend you have a look into clarity and insight spells first, to try and get the individual in question to come to their own realizations about the error of their ways.
If that doesn't work, there are always more coercive routes you can take.