I agree with everyone else she should definitely be fed twice a day, my lab has to be fed every 12 hours like clockwork or he get's sick like that. Both of my girls are fed twice a day although there are days they opt to only eat once, but I don't worry about them and always make sure to give them a couple cookies at bed if they only ate once just something in their tummy till morning.
You will notice a big difference feeding twice.
You will notice a big difference feeding twice.