I think it's probably Phytolacca americana. Ive been pulling out some pokeweed plants that are that size, and they look like they are in cold weather decline, same a this specimen. Amaranth Pink Lady has leaves with wide bases, as do all other Amaranth species. Hamelia patens is woody and this plant doesn't look woody. All 3 species have red coloring, but the red coloring in the Amaranth and Firebush is very bright and vivid. Seedling Hamelia patens seedlings have a much different gestalt than what's shown here.