Well, it's not an actual alien child, actually. I painted this for a personal puzzle game project called Human Upgrade Labs which takes place in far future where extreme body modification is almost casual, even for children and pets. The idea is that the mother here is influenced by ancient fashion and from their perspective the Victorian times and the later half of 20th century when the gray alien look became popular are so close together that they kinda blend into the same thing. A lot of misinterpretation can happen in thousands of years and digital media doesn't exactly tend to be preserved as well as stone tablets either.
Here's a link to an early but fully playable version of the game: https://ultra-shenanigans.itch.io/human-upgrade-labs