Gaara is the Kazekage and is one of the shinobi with the purest of hearts. So why didnt his Tailed Beast Shukaku assist him during his fight with Deidara? When Gaara got injured, Shukaku could have use his demonic chakra to heal Gaara like how Kurama healed Naruto?
Surely Shukaku knows what the Atkasutki's aim was and will surely want to be extracted as well, right?
Or, Kurama is the only Tailed Beasts that could heal its own Jinchuriki?