Anime music contributions if you are unfamiliar.
According to her husband, she seems to have been struggling with an unnamed chronic illness.
For some additional context, she had just gotten married back in March and then promptly went on an indefinite hiatus in July.
When I find a proper article in English I will link it here.
My personal favorites of hers are the Lycoris Recoil ED and the My Hero Academia ED. My favorite of her non-anime work is Anonymous.
I’d also nominate Aoibashi