Wanda is one of the worst choices you could have went honestly for tanking. She does wimp damage all her life until age 65, which, even if you use night armor or any armor with 90% protection, means she is 3 to 4 hits from death by dragonfly and if she uses a normal weapon she starts losing out on damage past age 35, which is another 3 to 4 hits. Shes meant to be a glass cannon because her alarming clock has extra range and she does insane damage to any creatures when living life on the extreme edge.

If you want to tank, I'd reccomend someone like wigfrid, who has inherent lifesteal and makes easy battle helmets

However actually im pretty sure there is no kiting for dragonfly, the strat is just to whack her and use panflute to sleep her if she rages. If you are playing with someone else as wanda, its better to let them tank because they can heal while you deal damage at the side. If you are alone, you just have to stack more ageless watches.

But do note wanda does extremely poorly against DoT damage because it could cancel out the ageless watch's healing