How do I explain bp to my kid?

[Guest guest]

My 4 year old likes it when my nada visits him. They only spend a couple of

hours together at a time because she's local so my kid doesn't experience the

volatility/rage that my nada is capable of. I want to end my relationship with

her while letting them have their relationship (so long as it's not abusive).

I'm sure my kid will pick up on the fact that nada and I aren't friendly. I

don't want to tell my kid the truth (that nada is crazy) b/c i don't want to

interfere in their relationship which might cause my kid to resent me down the

road. How do I handle this? Your advice/thoughts welcome.