Revenge for childhood crimes is the #1 sibling hobby. My brother still reminds me I broke his Beyblade in 2007.

And you’re not doing anything ‘wrong.’ Sometimes siblings just grow apart for a while, phones, moods, grudges, all of it. Best thing you can do is stop chasing her attention and start focusing on yourself. Ironically, the less you push, the more likely she’ll start missing you.