AIBU to think this is a bit rude/ cheeky?

If there’s a next time (!), take them out of the cabinet and re-home them in your room. She’ll get the message.

You're joking, surely? What do you consider it, if not a toiletry? Room spray?

I have probably 20 perfumes, but one that is my "go to" scent. They all are off limits to anyone else, regardless of where I store them or how often I apply them.

I'd think this was rude/cheeky too OP - it's not like a box of tissues on the bedside table. She absolutely shouldn't have used them without asking you first - the fact that they were in a "display" cabinet should have been enough to tell her they were not for general use. Hopefully, she hasn't used too much of any of them. 🙏

I can see both sides here - it's rude to use someone else's perfume, but a toiletry or consumable in a guest room is often meant for the guest, so I can see why she might have concluded that it was a generous offering of guest perfumes.

Nonsense. It's not a hotel. Everyone of average means stores personal belongings in their spare room.

If there were a laptop in a guest room cum office, would you log on and peruse the files or their e-mail, too?

Perfume is a personal toiletry
I would never have thought of perfume that way. Especially if OP has so many different scents so clearly doesn't consider any specific one to be "hers".

It's a spray from a bottle that is from a really large collection of bottles. Doesn't seem that personal.

In our guest room, I have a tray with various toiletries and cosmetics on it- moisturiser, tampons, body spray etc. They are there for guests to use if they want them. I imagine your guest thought the perfumes were for the use of whoever is using the room.

With her joking about getting her money's worth there's a good chance she thought these were out on display for her to use like complimentary toiletries would be left out in a hotel room. It's and easy mistake to make if you have them in a guest room, most people would have them displayed I'm bedroom, dressing room or bathroom, not a guest room.

15 bottles in a cabinet? I mean YANBU, but I can see why she didn't think it would be a big deal

She probably thought you were hinting she smelt bu leaving them in the guest room!

It's a bit odd to leave stuff you don't want touched in the guest room.

IMHO stuff that is put out in the guest's room then it's fair game to use - stuff you don't want touched goes in the bottom of the wardrobe

Seriously??

They were behind glass, in a cabinet, for the OP's use. Surely any civilized person understands that in a modest private home, they get the use of the bed and maybe some space to hang clothing in the guest room, not the use of every single item within it.

There is a glass cabinet in my guest room that holds several jewelry boxes. And I'd be taken aback if a guest came rocking out in mother's pearls or my grandmother's amethyst necklace or my gold bracelet.

Also stored in that room are scarves, clothing and shoes I don't expect to find my guests wearing.

I'd have asked, but maybe she thought that you wanted them using up?

People that say if you leave things in guest room are for using have a complete different approach than me. Is a room in my house, not a hotel, the things I have there are ours not for use like courtesy toiletries.
I am with OP I found it cheeky but lighthearted because I wouldn't mind her to use them but I would like, like OP for her to ask.

Yes I agree, when I have stayed at a friend's the things in the guest bedroom/bathroom are available to use and I might have thought the same for the perfume! Because if it's something special that you didn't want others to use, I would assume this would be in your room (even moved temporarily whilst guests are over).

Personally, I wouldn’t touch somebody else’s belongings if I was a guest in their home. Even if they said help yourself, I still wouldn’t.

Could you calculate how much her sprays were worth and send her a bill?

Perfume ages fast how do you get through it? As it was in the guest room most people would assume it was for the use of guests particularly as it ages so quickly. I always leave toiletaries etc for guests to use.

Extremely rude and cheeky OP.
So many clearly have no idea how to behave.

If I'm honest, I hide my perfume if friends are coming round and using our bathroom because a bottle of Chanel by the sink is too much of a temptation for some people.

Nonsense. Perfume is a personal toiletry; it's rude to help oneself! She was quite the clod to do so.

Civilized people don't need to have things hidden from them.

I think it’s weird that you put something in the guest room, that’s not for guests to touch.

Whilst I wouldn’t have touched them (thinking it odd that there were perfume bottles in a glass cabinet in the guest room), I don’t think it’s weird if some guests would sample them.

I’m uneasy on this as, I would think a locked door is verboten but an unlocked glass door, showing an array of perfumes, and no specific instruction such as “By the way, the perfumes are part of my personal collection — please help yourself to the guest toiletries instead” would make me think you are leaving them for me to choose to use, or not.

It's not the end of the world is it..? There are serious issue in the world, a guest using your perfume is a bit of a faux par on her behalf, but who cares. Let it go!

Think she is a totally cheeky CF! But do get one of those glass cabinet locks you can slide on if you get other guests. I would not let this person back. Ever!