I actually think she is on of the best 4* magic, behind only Violleta Tulip. Her atk is lower than Cyani, but Cyani is one of the slower untis.
This event was really easier to complete than any other for me, completed all stages but the 3rd at first try. The 3rd took 3 tries. And I finally got a 5* on the 50 Gem gatcha (got Chocolate Cosmos, wanted Rose, but Chocolate Cosmos nice too), I also got a Bianca Tulip, and with the Moonvine I will be finally free of all the 3* units, except my beloveds Rose Diana and Alstroe Maria (not replacing them ever )