It kind of feels like these two upgrade paths within Wendy's tree are kind of like the two that you choose to go with like do you want a tanky Abby that's not controllable or do you want the less tanky Abby that is more controllable
It kind of makes me think of how the balancing of them actually ended up becoming because they kind of were both looked at in a vacuum and I feel like the way that sisturn is balance doesn't really fit with that setup.
Since sisturn only really helps with very few bosses. Still think it would be better if the sisturn acted as a buff station that applied different buffs based on the flowers inside. So that way it actually has some competition with team spirit.
I feel like team spirit kind of dominates the skill tree because of how useful it is not just in combat. I felt like Wendy's other skills really need some changes to really give choice of what the player should pick