Four signs that Puttachi's vacation has gone on for too long.

1) She's creating a sugar trail around the house, complete with obstacles, to feed and entertain ants.

2) I overheard her talking to SIRI on my phone, asking it in her best imitation of an American accent, "SIRI, will you visit me?"

3) She has created a whole range of furniture and a car (with seat belt) for her tiny thumb-sized doll, out of nothing but flimsy construction paper and sellotape.

4) She lay sprawled on the bed, looking at the sky through the window, and told me, "Amma, sometimes I feel that the whole world is just a huge video game, and a giant is pushing buttons and making us all move, and is laughing at us."