Now that they're paying attention, a giant watery fist is sort of difficult to miss. Frisk darts backwards, catching themselves with a hand as they stumble. What's wrong with Lapis? She's angry, but she's not making any sense! "Lapis, I don't wanna fight," they say, but they're already scrambling to their feet; she doesn't exactly seem open to mercy.

This needs Silver, or maybe J. Something is wrong with her, and unlike at home, Frisk doesn't have the power to deal with it on their own. They would like to think they do, and given enough time and loops they probably could, but that's months they'd have to do over.

Though, things have already gone badly, haven't they? Maybe on the next run, they could save Sans from being caught...?

No. Not yet. Dying wouldn't be the worst thing in the world, but they'd rather try to avoid it while they can. Then, if they do have to reset, at least they won't have to feel guilty about it. After their moment of hesitation, Frisk turns and bolts - towards the trees on the far side of the hill, not the play structures. There are more water pipes there, and the potential for other people. None of them need to deal with this, and the trees will provide good cover anyway.