Well, it looks great (and the animation is good). But this is more about personal tastes, and I would rather discuss her skillset and stats.
Her stats are quite balanced-hp, def, speed, damage at an average level, a good addition to crit chance and there is + to crit damage, no eff. Imprint -Atk.
Skills:
S1 Attack, heals an ally with lower HP. Scaled by the Atk(of caster). It's hard to say without knowing the multipliers, but I don't think that big numbers should be expected (perhaps about 20-30%)
S2 Attack, def penetration 50%, 100% if there is a barrier on the target. When killed, it gives an extra turn. I think this will be her main feature. 100% def pen has the potential to kill almost any character.
S3 AoE attack, reduces the duration of buffs by 1 turn and CR-20%. Gives all allies an Atk buff for 2 turns (3 if soulburn). Not sure how good the damage will be, but the utilities are pretty serious.
I think you can use many artifacts on it, but I would prefer Guiding Light and Sashe.