Alaina has four children with her ex-husband John Huffman: sons Elijah and Lincoln, and daughters Hanna and Charley-Jane. Charley-Jane was born December 8th, 2009. The latter pregnancy coincided with the first season of Stargate Universe, and was written into the plot. On August 16, 2011, she announced on Twitter that she was having a fourth child to arrive in December, 2011. She later announced on Twitter that she had given birth to a boy named Lincoln, on December 15, 2011.