Hi Sabragirl,
I don't normally refer people to other boards, but since you say this plant grows in the Phillipines, I would suggest this botanical garden forum.* Many folks there that could be very helpful.
http://www.ubcbotanicalgarden.org/fo...splay.php?f=38
Do be sure to let them know where it grows and that it's fragrant.* Here's their main site so you can register and read their rules.
http://www.ubcbotanicalgarden.org/forums/index.php
I'd love to know the name of your mother's plant if you find out what it is.
Newt
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant.