Fennho,
if you subscribe to the superstitious theory, which I finally succumbed to ( told by too many confinement ladies and elderly family friends etc). try bathing her in a pomelo bath. it worked for my son. the other thing to try is to put bacj's rescue remedy into her bath ( i was taught this one by another site user).
For gas, what I found useful for my son was to buy an indonesian oil ( like our pak fa yau), but less stronger. I would rub it between my palms to warm it, and put my hands on his lil tummy. This was it helps him fart and relive the pressure. The indonesian oil can be found in those indo shops in causeway bay, and its called " bak shu yau" or literally, white tree oil. My indonesian helper says this is also commonly used in indonesia to relieve gas for babies as well. so its like a long time home remedy like our chinese bak fa yau, but without the smell.
hope the above helps.