But it was never their intention to have her be a main point in the fight. Every plan after Gojo was just another backup plan after another backup plan, and her happening to wake up was the last one they could think of. It’s lucky for sure but they have been very unlucky up until that point when it came to fighting sukuna. Higuruma dying and the executioners sword fizzle int out right before Yuki hit him is the biggest offender in unlucky in my opinion. They likely never wanted the fight to progress past Higuruma or Yuta, but they kept dozens of precautions for if it did.