Oh man. I discovered the OST before I stumbled upon the anime. Was very enjoyable, shame the studio went bankrupt...
I loved how they portrayed Nic's deafness.
@bruhclone
As far as I know, no there hasn't been updates.
This has happened before though, in 2015 she was diagnosed with another autoimmune disease and went on hiatus for 2 years. Hopefully she'll recover better this time.