HI @Ayunita0
why do you book this house in first place? if a host don't answer to my request I don't book with him, and that is what happening most of the time for everyone.
have you checked the past reviews? the host has a description of hiself? has all ID confirmation? the listing looks real or fake? maybe this house don't even exist. (worst case scenario)
anyway, now you are in a weird situation, where the host don't reply and you had already booked.
a host normally never cancel their own booking, so forget about that. because in she do that, she get penalized in many way that are long for be explained right now.
So, if you feel uncomfortable with this, you can:
1 - Contact Airbnb via facebook or twitter or call, and explain the situaiotn, maybe they can reahc the host easily. I have the Australia number, I don't know in Indonesia which is.
2 - Cancel now that you are in time, check her cancellation policy through the listing and see which kind of policy she have: moderate / strict..ect ... and do your math.
3 - or just keep the booking, save the money, hope for the best, and when is review time explain what happened with this host on the review.
unfortunately we can't be really helpful with this matter, is totally up to you.
See if others host have better solution for you.
next time remember to book with a superhost or with a host that at least answer to your request in couple of hours.
goodluck!
cheers Raf