Whatever you do, it should be a change in your behavior that is lasting, or why bother at all? The goal should be maintainable, lasting, improved health not just weightloss. Live as well and long as possible.
For me, veggies and activity are the keys.
Women who lose weight with out changing levels of activity, or flux up and down a lot, lose not just fat, but bone mass. Youre lighter, and also working towards being shorter and more breakable. Bad.
Good site for women's health:
strongwomen.com