Can't believe the previous thread reached a thousand posts, thanks so much for your support everyone!
I ended up reading MIL's facebook messages for me this morning. Turns up she wants to meet up at a café this weekend to smooth things over "without the boys knowing". She also said she would bring the egg pram back (?!).
Haven't replied yet. DH was pretty upset last night; not sure if he is actually considering going NC with his father. If so, it wouldn't be fair of me to meet up with his Mum in secret - but she's always been lovely to me and I'd hate for my GC having no GP in his life.
Ugh! Still so gutted over this whole thing.
You have all posted some very good advice so I am going to sit and read through it until I decide what we do now.