Hi angelinachea! Thanks for coming by!
Well, at first, only Tamara understand them, but as the game progressed, Tamara re-learned Indonesia language in a few weeks (with lots of stuttering, slow talks, & Granny Sukma's totulage).
Tamara's father is Indonesian so she has somekind of a base already. The lessons mainly serve as a reminder so I guess it's fair to say she learn pretty quickly? ><
I hope this answer your question & please, take your time & enjoy the game!