I'd suggest Penstemon alluviorum for the first, based on flower shape and slightly toothed leaves. The other looks like a different species, based on what looks like a different leaf shape... have to think about which.

I do believe the 2nd picture is Great Tickseed or Whorled Tickseed as it is sometimes referred. Definatly fits the leaf pattern and flower parts. Thanks. I now believe the 1st picture is Small Woodland Sunflower

It's a pretty broad question and some of the variables still undefined, so I'm not sure how specific one can get. There are MANY plants that would work, although some are not specifically indended as groundcovers. The amount of sunlight and the soil conditions and steepness of the slope will be the primary determinates, but I don't see why you couldn't maintain your cottage garden style throughout this area as well with a careful selection. If enough sun, things like dianthus, creeping phlox, even groundcover (sometimes sold as flowercarpet) roses would work. For fragrance, dianthus is a great candidate, as is sweet woodruff (Galium odoratum) or lily of the valley (Convallaria majalus), but those two prefer some shade. The attached link will connect you to a factsheet on GC's for West Virginia, as well as a number of plant-specific resources. Remember that a primary attribute of GC's is to spread and cover some real estate, so be prepared to deal with some aggressive, spreading behavior with certain species, but with attention, all can be controlled and contained. As to deer resistance, IME they will taste pretty much anything and depending on other fodder available, can dine quite heartily on even those plants with a reputation for deer resistance. Once you've made some lists of choices, I'd double check with local sources for those that are the least palatable. Here is a link that might be useful: groundcover resources

Believe this was addressed on the name that plant forum so moving it down.