My thoughts on Jane Eyre so far

So far in the book I've noticed that the servant Grace is very mysterious. Jane suspects her as the one who started the fire, because she heard the same laugh then as she did earlier coming from Grace's room. I wonder what will come out of this, or if anything will, but Grace is very suspicious and is the only one at the house that gets drunk and had bad manners. At one point she even asks another servant to bring her her dinner. Later that day Jane hears a loud noise in her sleep. My prediction is that something big will happen with Grace.