ANSWER:

This is not kufr but it’s not permissible as it is what the idol worshippers used to call angels as females. 

Saw a father calling his daughter my angel is that kufr?

Belief in the Angels, Halal/Haram Matters | May 26, 2021 8:17 am
Previous

If a person wants to repent from haram money, is it mandatory to donate those money? And can it be donated to mosque?
Next

I’m adopted so can my mother perform hajj with my husband ? As I’m adopted so he becomes non-mahram for her and there is no other mehrams in my family who can perform hajj with my mother and my mother is above 60 years.what to do in this situation if there is no mehram