The 14-year-old Stranger Things actor was the subject of homophobic memes on the social media site.
Users added “quotes” onto her selfies and photoshopped her into memes to make it appear that she was spreading anti-gay messages.
It’s not known whether the deactivating of her account is related to the online trolling.
This is part of a trolling trend, as three years ago some Twitter users added fake captions to pictures taken by Demi Lovato on Snapchat and Instagram.
The captions discriminated against overweight and disabled people but were nothing to do with Lovato.
This comes a week after Star Wars actress Kelly Marie Tran deleted all the posts on her Instagram after months of abuse on social media.
Her fellow Star Wars actor John Boyega has also urged fans of the franchise to stop harassing the cast on social media.
