To be really cross with my neighbour?

[Arkangel]

Backstory, we have two cats. One is a laid back Tom, the other a pretty vocal rescue girl.
We moved here last January and as soon as the cats started going out o noticed the neighbour was very keen on them, cuddling etc. To be honest I wanted to keep her on the good side because of the horrendous neighbours we had previously so I was very blasé about it and did the whole "oh yes, they love a cuddle, just watch Mixy though as she's very loud"... etc.

Fast forward to a month where I noticed she was letting them into her house.
I kind of tried to insinuate that she didn't really need to etc but she poo-pooed me away. I did categorically tell her not to feed them though.

Over the summer they were in and out both houses, including over the street (theirs and mine are now a little gang) so it was fine. I noticed neighbour had left out food and asked her not to, I gave an excuse about having to put their wormer in their food and she nodded along but obviously carried on feeding them, just inside the house.

Towards the end of last year I would get home and find both cats shut in her house, scratching to be let out. Or they will leave my house with full bellies to jump the fence and cry at her door for more food. This has become a nuisance as she then keeps them in until 11pm when she turfs the girl out to then cry at my door to be let in.

Anyway, it's annoying but I don't want to rock the boat.

This last week she's kept the Tom shut in and the girl too, I've been over to collect them back and the girl is missing a huge patch of fur over her back and tummy, as if it's been shaved. I asked the neighbour if she's used anything on her and she pretended not to hear me (she's old and does this a lot!!!) and walked into the house.

Maybe it's because I'm having such an awful week and a vets bill is just the last thing I need with no job.

Would it be unreasonable to tell her not to have the cats in her house? I don't know how we will bloody implement it because they'll be at her door crying (but then I DID say this would happen).

Am I being unreasonable in being stroppy with an old lady who just likes cats?

Buy her a kitten?

Tell your neighbour that they have developed a gastro illness / food allergy and need to eat special food which you have to buy from the vet, otherwise they will get very sick. That's what a neighbour of mine had to tell a local cat lover as she was over-feeding all the cats in the street.

Could you spread a rumour round the street that you’ve been desperately ill by something contagious you caught from the cats she’d soon turf them out! You need to be very firm with this lady she’s obviously one who thinks she can do whatever she likes regardless of what u say. So tell her the cats r no longer to go in her house. Then enforce it. If they r in her house hammer on the door no matter what the time is and get them back. And repeat until she gets the message.

Isn't it stealing, though? Keeping your cats, albeit temporarily, locked up inside her house?

I agree that you should tell her that they have strict dietary requirements.

You can buy special metal tags that go on the collar which say 'do not feed I have special dietary requirements' or something like that.

Is the cat that had the fur missing neutered? I know it's a bit far fetched but if she isn't,is it possible that your neighbour could have had her done?