Alita had been rushing things so that she may prepare for her second departure, after her trip to the cultivation world, Alita didn't lack any energy stones for the points that she needed.
And for someone who wanted to do business on Eartha, a measly seven million was not going to cut it as that was going to be reduced to nothing. After sitting down with Aaron, she had some knowledge about Eartha which she didn't have before.
To think that in some places the money she spent years saving was enough for a meal in an expensive and high-end restaurant, how can that not affect her?
Alita didn't want to be a pauper when she goes there so it was better if she makes a lot of money first or find something of value to sell when she goes there and earn a lot of money.
As she wasn't strong enough to settle her family on Eartha, she wasn't going to move them there yet. But she had to buy or build a bigger house at the moment so that she may accommodate everyone.