there's a Q and A thread for a reason. Lavens probably gonna close this thread...

1. I'm guessing you're just asking how to make her ATK above 10K.. first you just need to max lvl her, equip her with some SSR/SR accessories
it depends on the kamihime, though, offense tend to have a higher overall max ATK.. you don't need to worry about it if she's only at 2LB and not even awakened. Focus on other things first.

2. Do gemchas and get fragments of materials, level up tomorrow with the sunday SP quest so you can do higher normal SP quests like expert/ultimate and you can easily get holy stars and other things, especially in ult as you can get 2-7 gold chests in each.

3. Events
You'll benefit from being in an active union for the UE (union event) so you can get the draconic eye fragments at the end of the event, and maybe during too from the PP rewards or exp/ult rewards.