He let slip on the phone yesterday that my mum has blocked my number because im being cruel by taunting her with pictures of my daughter, and trying to use it as a handle to make her disobey Jehovah and talk to me. She's also telling non JW's that im dead.
Your mother is either in a lot of pain or she's a lying, attention seeking bitch. You know her better. Either way, if it's due to pain, you must respect her choice. If she's a lying bitch, you still must respect her choice.
I walked away from my family, and yes, that's supposed to give them "ammo", but only for so long and so much. As time passes and you are happy, and happier than them, they lose their ammo. Trust me, they do.
I'd respect her wishes and let her block. It will get real for her when she realizes that you are no longer trying.