Hello, no I don't plan for it to go down a path involving anything with suicide. There'll be some difficult moments (tantrums, depression, mood swings, ect) but I'm no one's going to die.
As for her personality I didn't give it that much thought, but I loosely based her around someone I know who is highly sensitive and also prone to a bit of depression.
On of the main reasons for giving her a slightly dark character was so that we had an positive reason for training her, as opposed to 'she just likes it' which doesn't make for much of a story.