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.