This is a bit of a long story, I'll try and keep it as brief as possible.
I've got a friend I've known a long time. We've been less close in the last few years because I got fed up with her, she has various issues that she won't seek help with which result in people having to run round after her, but you don't even get a thank you. Anyhow, last year she reached out and I took this at face value (but subsequently realised it was because she needed a favour from me! Once I'd done that I barely heard from her). Then I split with my partner, and trying to keep myself busy I offered to visit her (she lives about an hour away but doesn't drive - I said I'd drive down and we could have a day out - she doesn't work). She said I could, but her new bloke (who I'd met once for 10 mins) would have to come too. I didn't reply and not spoken to her since.
I've now heard from a mutual friend who saw her last month and said she had facial injuries (black eyes/ missing teeth). She claimed she'd fallen over, however the mutual friend (who jumps to the worst possible conclusion) didn't think this added up, and was concerned this was evidence of abuse. A different mutual friend who has met the new bloke more than me doesn't think there's anything to worry about as he doesn't seem the type (but then who does?). I initially agreed, also because friend does sometimes have a few too many so a fall when drunk was quite possible. Then I thought about her insisting that the bloke came out for the day with us, and wondered if that could have been controlling behaviour? Then again they don't live together, he also doesn't work so he's not financially supporting her or anything. Just not sure if there's anything to be worried about - or even if we contacted her if she'd tell us if there was.
The last part I should mention is that I was in a relationship where I experienced verbal abuse (as well as some violence/ threats though not much thankfully) for years and she and all my friends knew and did nothing about it, and never once tried to help me.
TLDR friend I'm not closely in contact with has injuries which may be DA, might not, what should we do if anything?