We want her to have as much Health as possible since the higher she has this stat, the more damage her Bloom specials will do. It’s important that she isn’t the one to activate Bloom’s Elemental Reactions (a partner with a lot of Elemental Mastery should do it in her stead) unless she has huge amounts of Elemental Mastery (which is quite complicated if we base the Build on putting all the Life we can into it, which in the end is the most optimal).