AIBU for letting my daughter see a friend without the third girl?

[Summerisnear1]

My DD is in secondary school now but still maintains contact with 2 girls she was in primary with. All love local to one another ( 20 minute radius )
girl 1 let’s call her Maria is not allowed to anyone else’s house, is not allowed anywhere without her mum. This include if other parents are present.
Maria’s mum always wants DD and “ Lucy “ to do their hour often messaging last minute to almost demand the girls come for the day as Maria is bored.
the other 2 girls like to go to different places, usually this supervised unless very local like the local cinema etc
recently there was a show on and my DD and Lucy wanted to go so I took them. This caused serious distress and upset to Maria and then spiralled to an upset mum.
Maria has a YouTube channel ( my DD does not ) but can see her YouTube channel where Maria describes as her “ fans”
she posted multiple videos about my DD and Lucy full naming them called them backstabbed, traitors and needed punishment.
I contacted Maria’s mum and explained the situation and she was explained that Maria was devastated that they would prefer to be with eachother than come to visit Maria.

I don’t want DD cooped up in Maria’s room every weekend and I don’t believe I should stop DD and Lucy socialising without Maria
AIBU ?

Subtly !!!

after the you tube post it would be immediate and clear that you don't go near people who are dangerously unwell

safety first always ! don't be polite in these circumstances

If she is in secondary school she is old enough to decide for herself but another thread of the day with unhinged people in it seems popular these days

They're trying to control the girls. A MASSIVE no no in my book. Maria doesn't get to manage their lives, & neither does her mother. If she won't let her daughter join them, fine. Their choice, & Maria misses out. That's not the other girls fault. They also need to realise, friendship isn't 24/7 access to everyone, or, as & when Maria, & her mum, feel like it.
I'd encourage my daughter to do as she likes, with whom she likes, & not what her "friend" & mother demand.

If I'm honest, this "friendship" sounds like it's more hassle than it's worth.

Well, as this was all happening several months ago, I’m sure it’s been resolved.

@Summerisnear1 Maria & her mum are weird, the brother sounds dangerous. Cut them off ASAP & let your daughter enjoy her friendship with the other girl. Maria is no loss if she’s slagged your daughter off all over bloody social media!!