AIBU to ask my mum to cancel her holiday hotel booking?

[MammaBear4000]

Booked a weeks holiday with my 7yo son (I have more AL than husband). We've got a week away at the start of the summer holidays I was looking forward to.

Sent a message to the family group chat saying 'first solo holiday with [my son] 🥳' thinking nothing of it. Mum asked where I was going so sent her a link to the hotel.

She's now booked the same holiday (solo room). Sent me a message saying was it ok (i'm working and can't respond straight away...but I would have said it's my first mum and son solo holiday and was looking forward to it). Before I had the chance to reply she booked it.

She fucking booked it within 4 mins of sending the original message.

Now here's were the AIBU part comes in. I want to ask her to cancel (she will lose money on this). Last year she joined a week away with me and my son and completely ruined the holiday. I don't want that to happen again and I can't bear the idea of no buffer and her being with us for a week in the same hotel. We have separate rooms but she won't leave us alone I know that.

Sending someone a link only seems like an invitation if the message includes the words 'would you like to join us?'. Otherwise it's just the simplest way to convey the information with minimal typing.

Sending a link is perfectly normal. Responding by booking onto the holiday is not.

From one of OP's posts:

'We had a very large row about her leaving my child in a very dangerous situation (think drowning) type thing. I left them alone for minutes to get us all something and arrived back just in time.

I got shouted (and sworn at) after saying what she did wasn't ok.'

You're going to have to tell her or only allow her to stay for one day. Booking elsewhere may also be a good idea. Next time skip the map and details on WhatsApp. Keep it to yourself, she may have felt invited. Also talk to her about how she ruined previous holiday. God id be furious!

My ds's ils surprised them on their holiday last year..
Ds wasn't bothered...his fil paid for the night out !
If we showed up on dd's trip she would walk past and pretend she hadn't seen us !
Your dm needs the diet of less information in future.

Any update, OP?