Koreabeat has a post about another defector, a young girl whose mother didn't make it -I think she is alive but still in the North - and the family who adopted her.
[H]er birth mother was caught by Chinese police and deported to North Korea. Mother and daughter have had no contact at all since. Yeon-ah then made her way to Laos and Thailand, and from there to South Korea. There are currently 90 such North Korean orphans living in South Korea, with between one and nine more arriving every month. Few are adopted.