intimidating litigent friends

Hoping for some more valuable advice please
hve hardly recovered from having Grandma congratulated for her good behaviour when she was caught out lying under oath 6 times. she came across as a frail and confused woman So different to what she was as soon as we got outside the court when she blocked my way and I had to walk round her also her 30 year old son glaring and making threatening gestures at my 18 year old daughter.( My daughter commented ''She has got herself a new *****, now that she has worn her ex husband out'')
I have recieved the first email dictating venues when they gave an undertaking that they would not interfere with contact.I intend to ignore it.
Can I object to her being litigant friend for ex due to high level of hostility towards me?
CAFCASS remarked on this but as Gran would not talk to CAFCASS none of this is on record. I cant face an appeal, I might get the same stupid judge.
Anybody got any advice about how to object to a litigant friend?
thanks in advance

I don`t know if you can, i had thought litigant friends were appointed by the court of protection but my other half says not, and she knows this stuff, maybe one of the wiki peeps who knows more about child contact will be able to help advise in a bit.

Someone can become a litigant friend without being appointed by the court if they have been conferred authority to act for a protected person or they have a certificate of suitability. It is up to the court to manage the case. You could set boundaries like you are doing ignoring emails, arrange to leave court at different times and communicate only when necessary through a solicitor. Alternatively there are laws to deal with hostility outside court when it amounts to harassment.