Because it's lolibaba so she understands her mother's worry, but real kids usually wouldn't. So don't slap kids' face off, aight?
Also @mahtan it's already dark when she was going home (ate riceballs + reminisced + probably waited for the rain to stop + another 4 hours going back home) so it's less likely she would have time to speak with the real estate company or anyone really. I doubt she has a phone at her age, and that house looks remote and secluded so maybe no neighbors. She's old-fashioned too, so most likely she would have a hard time understanding the concept of the internet.
@Ezlsnow
Because there is no way for her to go back there another day, right?
Oh, she also has to speak with the real state that is selling the house right that moment instead of getting the name of the place and calling another day from her house, right?
I get wanting to find excuse for plot holes and all but at least make some realistic ones instead of actual excuses...
@mahtan I was only just talking about the point of time that this chapter covers and I think the "excuses" I thought of were realistic enough for a small kid with a mind of an 88-year-old boomer, but anyway after getting scolded (ch12 spoilers for new readers)