Starting weight for Stronglifts for a novice WOMAN??

Don't worry if you can't do the bar. Dumbbells are generally better anyway as they allow for greater range of motion than barbells do. On top of that, barbells remove stabilizer muscles from the movement and allow your dominant side to carry your weaker side which allows you to get away with using a higher weight than what you realistically should be using, almost like the difference between squatting with a smith machine vs. squatting with a free bar. The only reason people start using barbells at higher weights is because when you get past a certain weight, dumbbells, due to their size at those higher weights, become extremely awkward to use.

Don't worry so much about warm-up sets until the weights get heavier. And you can use dumbbells or a lighter bar (does your gym have any body bars or women's regulation barbells? A women's bar is only 35lbs.) until you work up to an Olympic bar.