It’s a sad situation that a community vicariously can’t take in a vulnerable individual in need of shelter.
But times have changed - you work & have a child & need your time & space out of a demanding caring role to be able to care for your own (& your service users).
The boundaries need to be put in place because unfortunately society is more complex with drugs etc & in terms of safe guarding, you aren’t set up to be a professional refuge.
Individuals’ needs for refuge have not changed obviously, & in many ways that need is far greater sadly, than it was in the past.
So you’re being out in a very difficult position by your peers/the community.
If the other vicars are happy to decline but suggest you & DH as suitable then they’re scapegoating & know because your accommodation has spare rooms they’re using that to guilt you into it.
Why not offer one of those professionals (ie another vicar) to lodge in one of those rooms - while they offer their lodgings up as a refuge temporarily?
What about collective responsibility?
You have a minor & safeguarding is an issue.
Plus you are another female who will be alone at your residence at sone stages in the day or some pms & as such are also at risk of a dangerous, vengeful & abusive male, out to cause trouble for his feeing ex.
Do you have the appropriate security/ cameras/ escape doors not to mention fire health & safety things?
I know intuitively it feels wrong to say no but sadly I don’t think it’s appropriate.
You both do enough in your professional roles to the community - don’t let them guilt trip you into agreeing to this.