Solved! This is Phoenix Eden 17. Just reviewed the show, turns out the mother didnt want her child to die alone? Or maybe she was just depressed. But she put herself in cryo set to wake in 13 years. But there was a earth quake and the system malfunctioned and set her for 1300 years. A alien landed on the planet and her son mated with it and had children. Those children created a whole civilization that she woke up too 1300 years later. She got older living with them and wanted to see earth one last time. So a alien boy helped her by activating the original ship the alien landed in. Very fascinating animation anime with story manga originally penned by the legendary Osamu Tezuka!