Am I bad?

I finally got my baby to sleep through the night........
There's only one problem. In order for her to sleep through the night, I had to push her bedtime to 9pm-10pm. Am I bad for putting her to sleep so late?? She's 6 months. 
It used to be 730pm-8pm. But she would only sleep until midnight then wake up every 2 hours for feeding (she's exclusively bf). Sometimes she would just lay there and wouldn't sleep. Getting 5-6 hours of sleep. 
But NOW that I made her bedtime later, she will sleep from 10 pm to 4 am, nurse, then go back to sleep until 8 am. Getting 10 hours or so. 
This is the only way she'll sleep through the night/morning.