What is a nice way of telling someone that the reason why you don't want to hang out with them is cuz they are cringe?

Like I know this might sound a little mean but I don't want to be associated with my sister-in-law like just like I'm very selective of who I date I'm also selective of who I am friends with like I'm not trying to sound superficial but to a certain extent having certain type of friends can influence how society views you like I say she's cringe cuz she says like the weirdest out of pocket things out of nowhere and wonders why she doesn't have lots of friends like this one time when we were going to my mother-in-law's Christmas party this girl was whining and basically begging my husband who was driving to honk at the cars because apparently there is this one superstition that if you do it then you're going to get good luck or something like that I don't know and she kept insisting and I could clearly see that my husband's face was starting to get upset and so he stood his ground and said no and then my daughter which she's a child said that why is she weird and that she doesn't want to be close to her and I don't know if my sister-in-law shut down because she heard my daughter's comment and saw my daughter and me side eyeing her or she just kept quiet because my husband stood his ground but yeah I don't know this is an example of what she usually does and like it's cringe and now a year later low-key I don't want her coming cuz I know that the people that I'm planning on inviting for the holidays yeah they're going to make fun of her and if my brother-in-law and her think that I messed up yeah no I'm the nice one from the group so to be honest I'm not really going to stop my people cuz maybe she needs to be I don't want to see humiliated but called out I don't know what's the word for it but she needs to be in a way called out so she can like dial it down I mean if that's what my brother-in-law is into I guess but she should be reminded that not everybody is going to enjoy her weirdness lol

What is a nice way of telling someone that the reason why you don't want to hang out with them is cuz they are cringe?
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