Batik is a type of hand printed textile. Malaysians love colours. So Batik will be colourful. You could ask her to get you a scraf, which you could wear for a dinner or function. Plenty of silk scrafs in a place called central market/pasar seni or even the airport. Ties/shirts available in batik too.
Pewter is also another thing she could get you. Its basically things/decorative items made from a mixture of tin and copper. Nice key chains, letter opener, etc. These can be pricy, but its worth the gift. Lots of Selangor Pewter shops around. These are price-controlled items.
Malaysian art is also nice. Lots of water colour stuff and oil paintings.
Souvieniers from the Twin Towers? Thats pretty cool too.
Malaysia is not very well known for wood products. So if you see them, they may be a product of Thailand or Indonesia.