My mother has asked this - this is surely unreasonable

[BarrioQueen]

My mother and stepfather are due to be seeing in New Year with her sister and husband (my Aunt) friends in a pretty holiday cottage in the Lake District - it is fairly remote apparently. The cottage - not stayed in before is much nearer to them than my Aunt who lives a long drive away. They are staying a week.
My Mum isn't great at technology - so paid my Aunt half by cheque and my Aunt booked it. However my Aunt has not yet sent any details of how to find the cottage, address etc. Though my Mother does know the name of the village it is in. Apparently my Mum has sent her 4 messages or phone calls (requesting this info) soon after Christmas but the information has not been forthcoming and my step father understandably is wishing they'd not booked.

My Mum is asking me to contact my Aunt - I've sent her a text asking for the info - on how to get into the cottage and address but despite a long message all about the joys of Christmas no info has been forthcoming. I don't see the holiday cottage giving this info to the person who is not on the booking form as they would surely revert this back to the booking person - as I had thought of telling my Mum to contact them.
My Aunt is a bit of Primadonna - but really she's being unreasonable isn't she? Presumably there must be some reason why she is 'gate keeping' this info? My Mum is worried about driving in the dark, and concerned that she won't be able to access the cottage until after her sister arrives. Her sister has form for arriving to events really late - she missed my wedding service for example.
I guess I have answered this question - but aside from telling my Mum never to arrange a cottage booking with them again, how should she proceed? My Aunt seems to be being deliberately obstructive? My Aunt is not picking up the phone, and being unspecific in messages. Grrr. I'm going to stay out of this and maybe end up with my Mum for new Year!
This is bizarre behaviour isn't it???

Your aunty sounds so difficult

Your aunt sounds a pain tbh. All coeliac or even GF people know you always tell resturants/ catering in advance btw! Especially if it's a wedding.

I know the last couple of holiday cottage type places we have used, we didn’t get the address until the day before check in. Though why she couldn’t just say this if that was the case. Does she have form for being difficult?

Exactly. Plus she specifically told op that she didn’t need anything special to be done for her food wise. Unforgivable to make a fuss over gravy at a wedding. You just don’t have it!

She sounds like she’s deliberately stressing your mum out for whatever reason. Totally unreasonable. Hopefully your cousin will get to the bottom of it.

It sounds like your aunt hasn't booked anything, but cashed your mum's cheque, and she's still trying to find a lastminute deal.

Uncle has murdered his wife the aunt and is keeping up the pretence of her being alive but hasn't realised she has booked a cottage and doesn't know the details so is being deliberately vague .

Has she cashed the cheque?

Ugh I can’t deal with people like this… hopefully your cousin will sort it.

Well there will be towels for starters. If it is Airbnb they don't give out instructions for entry until 24 hours before. But also if your Mother is only 70 why is she messing about with cheques like a 95 year old? She can use a banking app surely? 70 is not very old.

She told us the cheque was cashed ages ago.
I don't think this holiday's going to happen, your Mum should make alternative plans for NY if she doesn't relish staying at home alone.

Oh bore off it’s New Year’s Eve!

Op might have plans with partner, friends, going to a concert/ club/ bar. She’s allowed a life too!

Hope your cousin has had better luck than you have in getting the necessary info.

I wasn’t sure what your AIBU was. If it’s about not helping your mum and leaving her to get on with it, I think you are a bit.

I would have helped my late DM with this sort of thing (and often did) if it was stressing her out.

Cancel the cheque(!)

It’s already been cashed.

This isn’t in the least bit funny. Glad you can find the fun in domestic murder.

Its common for places to share extra directions and key arrangements or safe/ details only on the day of expexted arrival to prevent people trying to gain access before they are ment to check in.
If this is the case, it is odd that your aunt isn't sharing that she just doesn't have the full info yet.

The aunt sounds like a proper pain in the posterior.

Have you been listening to too many true crime podcasts😂

My goodness what a pain in the neck. I hope your mum gets all the details soon and has a lovely holiday.

Did your cousin manage to get this sorted out?

The cousin sounds a plan

Even if mum doesn't go to aunts cottage

She is with her dh your dad so she won't be on her own

Fingers crossed Info is given soon

Did your mum get the details?

Any update @BarrioQueen ?

Sorry - I was just relieved that this came to a positive end.
Cousin went to his Mum's - stood over her while she sent info. She was indignant apparently, and would have sent her what she needed anyway - according to her. Very huffy. Only received texts from Cousin unclear why Aunt has been so awkward on this - she is an awkward person but this was not predicted. According to him - she has fallen out with lots of her friends in last few years owing to her 'controlling ways'. His view.

Mum received info - not the booking form - but the key bits such as address and passcode in very terse texts. Mum left eatlier today - had nice lunch in Penrith - Aunt not there yet - told her to enjoy it regardless. I expect there will be an atmosphere but that's on her (Aunt).

Aunt is awkward and always gets her way with things, but really has been a pain. I don;t think Mum will agree to anything like this again. She was keen to go to Lake district as that was where they holidayed as children. I think it has been a long while since she spent extended time with her and she has often told me 'Poor S. This friend of hers has cut her off/ been unkind/ etc' I think she might have realised why now. ' Aunt normally too busy to want to do much with her - so was surprised and excited to be invited to share (cost etc) of holiday cottage.
Anyhoo off to glam up for a night out. thank you to those that gave helpful comments. Happy New Year All.