The first couple of times I read this chapter I was like... "Wow, she effectively powderised that table in one kick?!"... but thinking about how she is and what Yokoi says at the end... no it's probably a cycle of what we see isn't it? She kept flicking through the pictures on her phone over and over, and every time she came to that picture, she got angry and took it out on the table... probably over and over until she saw it was about the time Yokoi was supposed to come home, then she stopped checking her phone, realised what she'd done and sat ready to apologise...
...that or she really did smash the table to bits in one go, then immediately realised what she did and sat there the entire time Yokoi was gone, waiting to apologise/repent for it. ;~;