So long and Thanks for all the fish

Just had an interesting phone call today.
One of my ex manager found my mobile and gave me call. She is asking if I would like to join her company. She is in need of my "talent" =P

She asked me about how I am going with my new job, if I am happy with the position. She wonders if I would be interested in changing again.

What can I say ?
She is not a person you can say no to.
She wants me to go for this position

Pros
The company she works for is one of the biggest IT company in Oz.
Big Money

Cons
Contract work
I just started a new job

What should I do ?