(posting from 3-6 figuring more people here have done Ferber already)
LO hasn;t cried yet at all - but rather is just hanging out in there... I wonder how long she will just hang out? I just let her be - right? Now its been 35 minutes.. Im assuming eventually she will fall asleep or get pissed off and cry for me... lol this isnt what I was expecting !
Re: Starting Ferber tonight and...
DEFINITELY let her be, especially since she seems so content. We did a variation of CIO/Ferber and it was probably the single best thing we've done for ourselves and for our son. Luckily it took about 3 nights of it, and each night got progressively better... he cried 4 times the first night, 2 the second night and slept until 5am - had a bottle - and went back to sleep until 7:45am on the third night.
Everyone has different things that work for them and their babies, but I personally had a hard time at first, but knew it was better for my child to cry a little but learn to sleep on his own in the future.
GOOD LUCK 
This. Good luck.