Inconsolable screaming for several hours at the same time every day is a hallmark sign of colic. If this is what your baby has, I'm so sorry. Being on EASY will certainly help your baby and you. Being on EASY will also show you if your baby truly has colic or not! But, if she really has colic, you'll just have to help her through the next couple of weeks or months until is goes away on it's own. Just know that you haven't done anything wrong. That time of night will simply be her time to cry.
I have a teeny disagreement with the previous poster. By the time my lo was six weeks (she's only just 10 weeks now, so I really do remember) she was ready for an hour to two hours of A time after most daytime feeds. The key was to watch her cues. But, I started with EASY from birth, so she was used to being 'awakened' after having fallen asleep while feeding by a diaper change. So I still did that if she fell asleep during feeding and if she woke up, then she was ready for A time. If she still looked sleepy and started getting grumpy than it was back to bed she went.