When he gets back to the river, Ilde is there waiting for him - having cleaned herself up a bit, or at least having convincingly pretended to, and having sent a text to Ivan not to expect her for a while. Which is apparently what 'telling someone what she's up to' means when it's at home, because it certainly doesn't involve 'mention the fact she might be conspiring to murder someone'. The word she has in mind is 'closure', but the image is of rain, and it doesn't involve talking it out.

“Did you get it?” she asks, one hand clutching the other elbow, one hand by her thigh, looking up towards him as he comes down.