Dsil had a miscarriage a few months ago and it is now coming up to the due date. She is also my best friend and I'm one of only a few people who even knew. We still talk about it and I know she still remembers her due date. I'd love her to know I haven't forgotten either and that I'm thinking of her on that day (and every day) but would sending flowers be too much? Something I should leave to dbil to do? A private day between just them? I've never had a MC so unsure on feelings here.
Just leave her. She won't be thinking about you or any gestures you make, it's really a non-issue. Just let them deal with it. I didn't want to pour over it with anyone either, didn't see how it would help, if anything I just wanted to get on with things and not dwell.