I have been SM to my DSD for 5 years now and we have a wonderful relationship (I dont over step the mark though). I have never knowlingly given the Ex Wife a minutes gip yet have been subject to seriously (cant even repeat most of it) nasty comments - to my DH, on the internet (FB) and even through my DSD!
How do you cope?? I have been brushing it off for years, and assuming if I ignore it she will tire of it but its not worked she just gets worse. My patience is wearing seriously thin....especially now DSDs 70 year old Gran has joined in :)
I know its all very juvenile and I shouldnt lower myself so looking for a survival tactic :)