Husband left his friends who I don’t know alone in our house with our 6 month old

Well, I wouldn't. That's my family, though, not the OP's. My bad for not reading OP's updates. I personally do not like FOO demands on my husband, and I don't tolerate them on my own side, either. But that's by the by. It sounds as if all was well that ended well.

Oh wow. I'd help a neighbour whose 11yo needed to get to A&E. He left the baby with three lifelong friends to do a good and necessary thing.

And even if their mother could drive, she would really need someone to support her daughter in the back while driving

Jeeez, what an over-reaction! I've never checked with DH if I've needed to leave one of my DC with a friend, much less in an emergency.

Presumably OP spends plenty of time looking after said child on her own week in week out. He 'offered to take her' so she could go out for brunch, but couldn't manage this without company?

Not on Mumsnet they don’t!

Once again some posters completely ignoring the OPs posts just so they can get their opinion on the screen.

I don't think you're unreasonble
to feel upset but your husband wasnt unreasonable either.

His lifelong family friends were visiting and his sister had an accident.

He probably thought he didn't want to disturb you on a rare outing with friends. That it wouldnt be great for a baby to be taken out on a drive with another injured child in a stressful situation. So he thought it better to leave the baby with friends for an hour get his sister sorted then come back.

Have you asked him why he thought that better?

He made a judgement call turns out you disagree. Just say that you would prefer to be called in a situation like that if there is a next time.

Jesus! I would criticise him much more for not helping a child with broken bones than for leaving his baby with friends for an hour!

Some families and friendship circles actually support each other in times of crisis and emergency. Honestly, some of the replies are beyond ridiculous. A good father is capable of considering and making a decision about this. I think those of you who are so against might well be projecting your feelings about your own partners abilities as a father on to this?

Well done, you've crossed from cold to callous. Give yourself a pat on the back

If you decided to leave your child with a lifelong friend that you would trust with your childs life with, never mind your own, you would feel the need to ask your husbands permission?

The dynamics sound really odd here.

I haven’t left her alone with anyone properly yet, I’ve left her with DH while I go a walk but the longest I’ve been away from her until yesterday was maybe an hour.

She’s 6 months old, but your husband hasn’t been alone with her for more than an hour? Why?

DH said he would have DD and invited a few of his friends to keep him company.

Why did he need company? Is he unable to parent by himself for a few hours?

Anyway, he should have taken the baby in the car to pick his sister and mother up and dropped them
both at A&E, then returned home with baby. He shouldn’t have left his friends responsible for looking after the baby.

I sound awful but he just sounds like a very odd man.

OP has explained exactly why he need to take his widowed mother and young sister.

11? Where are her parents? See my later post.

There are so many situations on mumsnet where a father has had a child-related situation develop, given up, and then called the mother for advise and/or to take over. Such situations are usually castigated as examples of weaponised incompetence.

Yet here we've got a father who competently dealt with an emergency situation without needing to go running to his wife to take over and he's being accused of not being sensible, not caring, and otherwise doing it wrong.

She's eleven, with two broken bones.

Not the point at all. If I were the friends, I wouldn't want to be left with someone else's baby, especially if it was only one parent who ok'd it.

I'm surprised the sister didn't call an ambulance many on mumsnet seem to think they are the a&e designated transport service for everyone.

Because he loves and cares for his 11 year old sister? Like any decent person would.

Would you not help? That's cold, bordering on callous

I would be livid at him putting his FOO over his baby. Either his sister is a child, in which case his parents' responsibility and not his, or she is an adult, in which case she can get to A&E by herself.

How do you know its a rare occasion? Has OP never left the home once since birth? She said its a rare trip out with friends, not that she's been housebound for 6 months.

It isn't hard no but again, babies like familiar faces you don't just dump them with strangers <to them> to ferry folk about.

I would hit the fucking roof. Why did he have to drop his sister to A and E?

Why is his sister getting to A&E his problem? I wouldn't be happy with this, OP. I am surprised at the number of people saying you are BU.