Tyr is going to be pretty nice once her rework comes, and that's soon. Odin is VERY lackluster, basically only gaining Fortitude from it. Susanoo Awakening is alright, but that's about it.No she doesn't? As long as you use her skills on cooldown and don't miss out on attacks (like previous party members killing the wave before she gets an attack out), she'll be just fine.
Full Bursting can be an issue though, depending on how quickly you need to reach it. But if you want to reach it fast - you can just not use her third skill and she's pretty fast.