Ahw man, that sucks. :c
I heard Fire Alpaca is a good program if SAI doesn't work! It's for free as well!
Maybe re-install SAI again??
Omfg I really hope to be able to show them soon as well. X3
I did have a small design for what Adira would look like! But I drew her with another person's OC as a gift for someone. xD
Here she is, on the left!
Here are some early designs for Roxas and Luna:
And here are some early sketches of them:
The top are Luna and Roxas obviously. Down are Adira, VERY early concept of Maria (I changed almost everything about her design) and a early concept of Lyra. c: