You get her for reaching lvl 150, Login Bonus and i also found this:
- Reaching Lv 175: Get Astroemeria Equipment Flower
- Reaching Lv 200: Get Astroemeria Skill Flower
Don't know if we get another copy of her after completing the story...
I will also run the story missions. Free Gems, fast Level and money
I reached Story Mission 32-1 yesterday.
45-5 should be the last one i think.