She is not one of my closest friends but we meet for coffee and for the dc to play together, and her dh and mine do the same jobs so we/ they also have that in common too.....
anyway her mum dies form cancer 10 years ago, and now her stepmum who she is close too is also terminal, with about 2 months to live
she has taken this very badly, and gone to pieces really 
her dh is not the most supportive, but he works hard and long hours and does his fair share with the dc and she is a sahm.
she has been getting increasingly unhappy and told him that their marriage was over but had stayed with him in their house, although in separate rooms, although i think he thought he would win her round
on saturday she left, and left the dc with him
they are only 5 and 2
and he is extremely busy with work (he is a farmer and it's harvest time) so i think she was feeling a bit ignored.......
what do i do? i don't want to take sides, but want to offer to help him with his dc
any advice?