Hi, I just asked my maid about what your maid said.
My maid(good maid, who worked for me for 6 years, can trust) confirmed what she said is true:但佢同我講耶加達好多壞人....she said there are even sometimes murders there. And my maid said 萬隆(Bandung)is more safe and resonably close to jakarta.
What i want to remind you is that your maid is not lying(but i am not sure if she has other purpose to go to 萬隆 for other reason). But if you decided to buy her ticket to萬隆, still you better 簽足文件 with her and stated this is upon her request. After all if Jarkarta is her 原居地, if you don't let her go back there, you may (i am not sure) be in trouble, so best to check with agent first.
But if i were you, unless your maid is really really good and you really want to help her additionally, just buy her Jarkarta ticket is fine enough.
Don't be too kind to them, cos in many cases, you'll regret.