Muthu is obviously wrong about Celina aunty because in the start of the book Celina aunty was the one telling Viji to write a letter to Rukku. Viji definitely didn’t feel scared of her in that moment so she is probably safe.

I think that Rukku and Viji should probably find somewhere dryer and safer as their home since as of now they live in a graveyard, and when people die they usually get buried so if a funeral is happening they could get caught by the people at the funeral happening. since there isn’t much elevation in a graveyard it would probably be hard to find anywhere dry to sleep. so they could probably go to Celina Aunty.