Jessica is probably extremely hurt. She gave alot to SM and SNSD since she joined the company at 12-13 years of age. She grew up in SM and with the members of SNSD. This was her life and she wanted something for herself and got fired.
It was for the best. She is free of that company and can work on herself now.
I honestly miss free time so much. Where I just lay at home, discover good music, paint and do DIYs.