It seems like TLC is better off releasing a line for girls, even if it is "stereotypical". If people don't like a line for girls, the "normal" Lego sets are still out there. If people do want a line for girls, now there is one.
On another note, I'm curious that no one has complained when a "stereotypical" boy line is released. There are many Lego themes that have mostly male minifigures holding guns/weapons to fight something. I never saw a huge upset over those sets, why these?