@Popcornlassie28 oh hen, this isn't use of a jet wash and cup of sugar every 2 years. This needs to stop.
Being neighbourly doesn't mean you have to be beholden to being a unofficial servant to a horribly rude, obnoxious and entitled person.
You sound like me Popcorn, before I stopped being a wee dickhead.
Many years back, (my DP LOVES telling anyone he can this story, it's whole stupidity/CFery just crack him up!)
Dp and I were dating and he came over for his dinner. Being single with one DC myself often I had the local kids come over for dinner so my wee lad had company. It was an area full of poverty and loads of typical "channel 5" families. Anyway, it was a Friday night and were settling down for our meal and the door knocks frantically, my neighbour and her 3dc at the door, "Lauren can you watch the kids, I need to go to a&e, they've not eaten but they're not fussy", one was a wee baby, no milk etc, no nappies, but she was frantic. I send her off telling her go get seen etc, she seemed so worried. So dp (wasnt even my boyfriend at this point!) goes the shop for me, gets some baby milk and nappies and Ella's kitchen thingy, stops off the chippy for some sausage and chips for the older kids. Sees a taxi outside neighbours house and assumes it's taking her a&e. As expected.
We feed the kids. They get tired so I put them in my DCs pjs and put the baby in my dcs old pram, put the older 2 into my bed, haven't heard from their mum but she dropped them about 6, it's now 11ish.
Kids settled I got on fb to message her, to see... tagged photos of her and a group of pals all on an impromptu night out. She's on karaoke, she's dancing around, she's doing shots, all of it. 😂having the time of her life.
Because she was so hammered I just let the kids stay, she didn't contact me, I didn't her, I'd love to say I dropped them bright and early for her hang over to kick in but what actually happened was I ended up keeping them until her mum found out I had the kids, knocked awkwardly, she tried to keep her lie and I just said, "I've seen her fb posts, don't bullshit me, it's fine". And that was that. I did refuse after that to have the kids again though. Quite honestly if she'd have just said "lwren will you babysit tonight, I'm dying to go out", I'd have said yeah, but the lying etc was so unfair. Plus I was pissed off that she left the baby with no nappies or spare clothes, was just lucky really I had things i kept for my friends wee baby visits, sheer luck, without them dp would have needed to run the asda 😂
Don't be like me Popcorn, don't be the pleb who couldnt say no to people until her 30s. It makes life so much more difficult for you and you know what, you can break your bones for arseholes that wouldn't give you the steam off your piss. You need to be a rolemodel for you DC as well, don't want them thinking that you have to put yourself out for others, that's what made me change, I didn't want my kids saying yes to anything they didn't want to do because they saw my wee dickheady self say yes to things I'd have really rather not done.
I don't know if it's being women we've been told so much to be "good girls/be kind" or just awkwardly British and people could offer you a moldy piece of toast and you say, "that's lovely, ty", but we need to stop doing it. It's really affecting your quality of life isn't it?
I sympathise hugely and hope you get this sorted now. And definitely put a fence up!