To add, I was in an bad relationship once. One of my neighbours came round and knocked on the door to ask if I were OK. I clearly wasn't but I told her everything was fine!
Another neighbour came round to drop of a parcel that had been delivered to her house iid clearly been crying. She came back later and just said if I ever needed to chat, her door was always open and the kettle was always just boiled.
I avoided her afterwards. And never went round.
I felt 'seen' and not in a good way. I was trying to keep things together and make things right and all the neighbours kind and discreet interventions did was make me feel exposed. I felt embarrassed and ashamed. And, yes, I know it wasn't my shame but that didn't matter at the time.
I just wanted things to be normal. To be seen as normal.
So that's one way it can make it worse.
ETA: this was basically because it was the lack of wider support that I was scared of. I didn't need help getting out of the relationship, I could have ended the relationship at any time in reality, but the uncertainty of what would happen next and what life would look like, how much worse it was going to get and for how long before it got better was what kept me there.
Just discreetly asking women if they are ok doesn't change anything if they don't know what will happen after they've said no.