Further photos show the girl in the hospital, still in pain, with the obvious marks from the snake bite still visible on her wrist.
Spain has pleaded for people to ensure kids their kids “don’t end up like [hers]”.
She wrote “even though nature is beautiful, it can be very dangerous” and begged parents to teach their children “when to just leave things as they are”.
Spain’s Facebook post went on to attract thousands of comments, a lot of whom argued Spain’s daughter should have recognised the dangerous breed of the snake right away.
The copperhead is a common species in the US state of Virginia where the family live.
“There’s no similar-looking harmless snake that looks like a copperhead,” one person said.
Spain has hit back at critics, saying her daughter had “never seen a venomous snake in person up to this point”.
“She has always been taught to admire wild animals from a distance, but we as her parents understand that she is 15 and won’t always make the best choices,”
The girl has since returned home and is recovering, with Spain saying she is doing well.
Copperhead snakes are responsible for more venomous snakebites than any other species in the US, according to National Geographic, but are rarely fatal with only a handful of deaths reported over the past 100 years.