I think it would be kind to write to DIL expressing your sadness at the split and wishing her well.
Definitely do not add your opinion or suggest she re-thinks the situation because you don’t know all the ins and outs and chances are, your DS has left out some relevant information.
Plenty of in-laws choose to side with their child (even when infidelity is involved), so I think if you can remain on friendly terms, that does you credit.
Lack of public toilets in towns.
Good Morning Tuesday 23rd April St Georges Day
What is a reasonable minimum spend for an online grocery delivery??