....okay. So what's there to be a feat in here? Rarely did someone ever try to use a physical attack on Kaguya, but when she did, she either dodged them or easily countered them with chakra. That's why it didn't work. Naruto took off her arm with one of the few physical attacks that managed to land on her. Her healing is incredible and her chakra prowess is literally godly, but she really doesn't have much on tanking feats. Sakura managing to lightly damage her with a low chakra punch is not something worth celebrating as a feat, especially when, by the time she was returning to the Juubi form, her horn was already healing.
She kinda indirectly caused this situation to begin with though.
Naruto punched Kaguya, after having a whole monologue with the 5 tails about his unparalleled strength, and it did nothing. Sakura used a fraction of her power and it broke Kaguya bone.
Something only the 8th gate did person.
Naruto ripping of her arm isn't much of a strength feat, he uses Kurama's chakra hans to cut through it
like a Chakra scapel
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Naruto resulted to scratching kaguya to disarm her because he didn't hit like a woman.
Sakura has enough tanking feat so that we know she isn't going down easily,
She revived a paper bomb head on, which was shown to how the blast power to blow off limbs.
She is highly resistant to pain, and strong willed.
But Sakura mostly lacks tanking feats because she specializes in not getting hit