Maniac Lucid I spent the last year dreaming (nightmares?) about the dreaded Parental Alienation Syndrome, and gathered copious notes to help my son put together his evidence for the court, as ex-DIL systematically set out to alienate son from dad, and even wrote her intentions in a few emails, in the vein of 'you will never see your son again...I will screw you into the ground.' This, after several weeks of grandson staying at dad's 3 times a week, in the lovely flat he had rented 500 yards away so he could be close to his son, take him to school and help him with his homework.
I would say keep every little bit of evidence, keep a diary, any texts, emails, facebook postings, anything at all that demonstrates what is being done to alienate father and child. That incudes anything that is said or written to other people who want to support you, too.
The judge in my son's case took a very dim view of what she had been doing, especially as she undermined her claims by capitulating and allowing contact whenever she wanted money. Bank statements were obtained that evidenced her spending in the off licence and there was a clear pattern betwen drinking and her outbursts, followed by demands for money. The judge told my son to write the access document himself, in discussion with son and with the agreement of her solicitor, who advised her to comply.
Judges are becoming much more aware of PAS now, so take heart and keep going. 