Friend leaving me whilst on holiday

[roastdinner346]

So me and my friend went away for a weekend break (Friday to Monday), for an early celebration for my 40th birthday next week.
Its the first time I've ever been anywhere with anyone else apart from my family.
A few things really got to me.
Firstly was she rolled her eyes and gave me looks when I said I was hungry. She's on weightloss jabs, and has no appetite at all, and can only manage a few mouthfuls, which is completely fine, but that doesn't mean I don't get hungry 🙈
The next thing was that I wanted to take a pebble off the beach for my niece, who collects them from various places.
She didn't agree with this, and we were paying for something in a shop and she went on about me taking the tiny pebble, saying that it should be left there, and said it so loudly all the other people in the shop could hear. It just made me feel really small.
Then last evening in the entertainment lounge, she started talking to a family next to us. Which again, isn't a problem, but I'm left on the end, left out of the conversation, and because I'm slightly deaf, I had no idea what they were saying to even join in.
She asked me to get drinks, which I did, and then I turns out she had told them that I'm introverted and that I hate people. So god knows what these people must have thought about me.
I will happily speak to people, if I'm included.
Then today we were supposed to be going for a walk to the other side of the sea front.
I needed the toilet, so she decided to go without me. I didn't realise until I texted her and she said that she's already gone.
So I was left to do nothing, for hours, by myself.
At that point I got really upset. She knew I wanted to go. I'd had enough and just wanted to go home. I didnt want to share a room, or pretend I was ok any more, it was exhausting, so I got a family member to kindly pick me up and take me home.
For the whole weekend it felt like it was just an excuse for her to take endless selfies, not once did she ask to get one of both of us. I just wondered why I was even there.
Am I overreacting for being upset about all of this?

Its been interesting reading the comments, and seeing what other people have thought.

When me and my friend were walking back to the apartment, I said I was just going to the loo before we went, and she said she was going to put something in the car.
I waited a bit thinking she'd come back from the car, but she didn't. I then went to the car and she wasn't there, so I messaged her and asked, and then she said she'd gone for the walk.
I was upset because she knew I wanted to go too. After all of the other things that had happened, this was like the final straw and just upset me, and I didn't want to spend another 24 hours pretending I was happy about the way that I felt.
Yes I could have done the walk on my own, but I was looking forward to walking and seeing the views with my friend.
I am completely able to do things by myself, I've been to concerts, the cinema, events by myself, the point was that we agreed that we was going to do it together.

Regarding the comment on driving and did I help. I can't drive, so she did, I didn't need to offer directions as she has a sat nav, but I did contribute by providing the petrol.

Hearing aids help with hearing loss but cannot completely recover everything that is said. People should be aware of this and be more inclusive and understanding.

OP it doesn't sound like she was sympathetic to you. I'm surprised that there is an age prioritisation policy regarding hearing aids in your area - that's not the case where I am. I've digital NHS hearing aids which are really good and I definitely couldn't work without them so the under 50s not being prioritised is strange.

There is evidence of a link between dementia and uncorrected hearing loss so perhaps that's why older age groups are particularly prioritised.

Sure. As ever, though, the only behaviour you can change is your own. AIBU is full of complaints about how someone 'should have' done something, or should have known not to do something else. But bluntly, you can't do anything about that. You can change your own behaviour in response, or foresee enough to avoid the situation.

But the OP, in having emerged fairly recently from a long, abusive relationship in which she says she wasn't allowed friends, is probably comparatively inexperienced with friendships in any case, and was certainly a novice as regards the potential pitfalls of going away with someone which many of us would have been aware of since disastrous weekends away in our teens.

Blimey, with a friend like that who needs enemies as they say!

An argument in favour of holidaying solo.

it’s really is very enjoyable indeed and avoids all that disappointment. Enjoy.

Seconded!

I’m really sorry to hear this.

Completely fine. We've always got on well.
Although I have noticed if I ever said i had any health issue, she's always had it worse, but that's about it.