We had the same thing (almost) happen to us
my dp met,married and had two kids with a woman
they broke up 14 years later,and a year later he met me
she turned into an utter psycho-normally I’d never say that about another woman but she really did
endless spiteful phone calls,spreading rumours,death threat,revenge porn,stopping him and his parents from seeing the kids (we went to court and she ripped up the court order-it’s ongoing) dripping poison into the kids ears,tried to stab him when he went to drop his dds birthday present off,and had him arrested for hitting her-you name it,she did it-I’d be here all day if I went into the full details
anyway,we lost my darling fil just after the 3rd lockdown (he was minted—he rightly left the whole lot to his wife)
My dp rang the kids to tell them that their granddad had died-he’d just put the phone down,when the phone went again
it was the ex wife-demanding to know what her share was going to be
dp looked confused and told her nothing-the whole lot was going to his mum and we where not seeing a penny (rightly so-it wasn’t our money)
the ex wife then rang darling mil and ranted and raved that she was owed at ‘least 50k,minimum’ and that she was ‘going to sue for it’
my darling mil (who is the most gentle soul you’d ever meet) had lost her husband of 50 years less than 4 hours earlier (and she lost her dd 20 years before that)
on the day of the funeral,ex wife got their youngest dd to ring and ask (demand-her mother was stood behind her forcing her to say some foul things) for ‘mums money’
this kid at the time was 12
it’s taken a stiff legal letter and a divorce (she refused to sign the papers-so we waited the 5 years,covid hit and it was pushed back) to finally get her off our backs
shes still running round telling people that we’ve ‘kept her money from her’
some people really are that greedy