Any trouble from the ex and the police would be called.
And how long do people think it would take the police to get to them with the way things are currently? I’m in London & in 2019 the Mets average response times were:
Immediate threat to life: 15 mins
Serious threat: 1 hour 27 mins
That’s the lastest data I could find but in all probability I bet it’s a hell of a lot worse now.
Also go onto YouTube & see how quickly it’s possible to break down the average front door if someone is determined to get in, it can literally be done in seconds!
We see it time & time again in the media that when a woman tries to leave, these abusive men become murderous so if the violent ex does get through the door, who would be expected to deal with him while waiting for the police? We can shout about equality & misogyny all we want but let’s be real, it’s the husband who would be expected to step up so damn right he should have a say. Also, are people’s own children in the house when this is happening? These men have no problem killing their own wives & children so I doubt they’ll think twice about a do-gooder who’s in the way.
Some people are responding purely emotionally by only thinking about the acquaintance & her child without a second thought to the practical implications for themselves & their own family’s safety whereas others - like OP’s husband - are only thinking about it logically & the impact on themselves with no compassion for anyone else whatsoever - both approaches are understandable as a first, knee jerk reaction but neither response is right. I agree with others that OP should help the friend get a hotel so she’s safe & then go from there, no need to risk inviting trouble into her own home though.