My goodness dorset I recognise that behaviour so well. Ex-DIL fishing out old shoes to send grandson out in and claiming he has no others (after I had just bought him new shoes three days before), sending him to a party in his school trousers, saying nothing else fits him - all lies of course, and designed to alienate as many people as possible from my son. These days, she is keeping a lower profile, having blotted her copy book so many times - grandson is able to assert his wishes to see his dad, and tomorrow my son has told her I will be meeting him from school, too, as she has sabotaged a couple of plans in the last fortnight. I think she realises now that she can't just deny their son his right to see his dad and family if he wants to.