Is my betta too light to spawn

This is a pic of her

http://i54.photobucket.com/albums/g117/l...

but i heard that only dark bodied females can spawn or get Vertical lines. But can she breed?

Any female can spawn, but you'll only see the vertical stripes on darker colored (as opposed to white or very light colored )fish. You'll be able to notice the presence of an ovipositor, regalrdless of her color - see the photos on this link: http://www.flippersandfins.net/faq.htm#m...

Yours should be able to breed once she shows an ovipositor, but I think you'll notice some strips on yours as well (they may be faint, but I think she has enough color that you'll see them).