AITA about gifts

So my mom is always buying my kids stuff. She buys things new all the time but she likes to shop at goodwill as well…i don’t buy stuff from goodwill for myself or my children. And i don’t really want my kids to have second hand items from people/places i dont know either. Is it wrong if i tell her i don’t want toys from goodwill? The last few things she brought in here were kinda dingey so i knew it wasn’t new. I thought it was my nephews old stuff which i would have been fine with but she got the stuff at goodwill. Am i an asshole. I feel like i am. But at the same time i just don’t care for second hand items. Dollar tree Walmart dollar general family dollar are fine but something about second hand bothers me for my kids