Audrice looks like an elaboration of the name
Audrey <--click here for more info.
Mommee reminds me of Maumee which is also a place name. Although not
Cherokee it does have Native American roots and is the name of a tribe aka Miami. From what I've gathered Maumee is thought to derive from either the Chippewa word omaumeg meaning "people of the peninsula" or a Miami word for pigeon.