Repeated feedings inside the enclosure can train your snake to associate the opening of the lid with the reception of food. Not always...but it can.
My concern would not be now, when she is a hatchling, but 2 years from now when she is a sub-adult, 2.5 feet in length and weighing around 250grams. After 2 years of being fed in the enclosure, there is simply a larger risk of aggression than if you feed her in a seperate container.
This, of course, is only my opinion. I may end up being wrong, in which case, you'll be lucky. But the potential is there, and I just won't risk it...