All the mecha clans in Base Nebula had their own thoughts about Lingtian becoming an independent army.
As for Ling Lan, she only came out of her closed-door meditation three days after the reward was sent out.
She couldn't appear on the day the reward was given out since that would seem too fake. She needed to give the military an out so that they could console themselves.
However, she wasn't doing nothing while doing closed-door meditation. She made many calls with her father discussing the new location of their new base camp. After some back and forth, she and her father finally decided on Base Nebula to be Lingtian Independent Army's new base camp.