Just to start I have no problem with some second hand things as long as they're in good condition and fit for purpose however my MIL doesn't seem to understand this and is now calling me a snob and stuck up.
I had my first daughter 7 months ago and since then I'm petrified to step foot in her home. Every time we visit (once or twice a week) most surfaces in her house including her bed are covered in clothes for my daughter. I don't mind her wanting to buy her somethings but so far all she buys is cheap bundles of clothes that are out of season (shorts in winter and Christmas jumpers in summer) and they're all stained, worn out and filthy. Now my MIL is well to do and doesn't have to buy cheap she just loves to shop and the more she can get the better which unfortunately she hoards. On top of the clothes she's also bought an old second hand pram and cot (neither of which are sold anymore) and they're also filthy with dirt and mud although she insist she's clean them.
My main problem is any time I buy anything she goes out and buys the same and gets upset when I don't want to throw out what I've bought for my daughter and use hers instead I.e. she didn't speak for a week when I told her I would not be returning my new silvercross pram to use the one she got for £30 or my nursery furniture set. It's gotten to the point I now panic anytime I step into the house since anytime I open a cupboard or drawer I'm not joking when I say they're filled with the baby clothes and shes planning to buy more things to set up her own nursery.
This isn't her first grand child and my OH has assured me that she never did this with his nieces and nephews and thinks I'm acting insane for not getting rid of everything I took months choosing for our daughter and use what his mother's bought instead. He doesn't understand that I want the joy of doing all my new mummy firsts and his mother, although good intentions, is making me feel put out and makes sure to make me feel guilty every time I don't accept any of her gifts now such as when I showed her the nursery decorations I had just got and she bought a different one because she prefers gender neutral rooms and then proceeded to tell my OH I got my set after just to spite her, he eventually got the truth but I'm so annoyed she would ever say that and he believed her.
It's long winded I know but basically I'm at a loss and need some advice on how I should move forward.