Hello Ostrich,
I just wanted to offer you some support around this.
It must be very difficult to witness your child’s family not making an effort to build or maintain a meaningful relationship with your child. It can be so frustrating to see our children either being upset or not considered by family members as it can feel so outside of our control and we always want to protect our children.
It sounds like you are doing what you can to try to stop your child from being exposed to their manipulative and abusive behaviour. It may not feel like it at the moment but one day your child will be grown up enough to recognise who in their life genuinely loved and cared for them.
If you feel like you need any further advice and support around the contact, you may want to connect with your local specialist domestic abuse support service. You can find their details here: https://www.womensaid.org.uk/domestic-abuse-directory/
Take care and keep posting,
Lisa