Part 1, A Distraught Mother http://www.sumanasinc.com/webcontent/animations/content/meiosis.html
http://www.biology.arizona.edu/cell_bio/tutorials/meiosis/main.html
Spanish:
Part 2, A Strange Child
http://www.britannica.com/topic/chimera-genetics http://genetics.thetech.org/ask/ask138
http://www.joshuakennon.com/how-much-dna-do-you-share-with-your-blood-relatives/
http://genetics.thetech.org/ask/ask284 http://www.geneticsandsociety.org/section.php?id=112
http://www.medicinenet.com/script/main/art.asp?articlekey=8905
http://www.nejm.org/doi/full/10.1056/NEJM199801153380305
Spanish:
Part 3, Epilogue: But How Does it Happen? There are no website for part three since it's mostly about your own analysis and creative thinking. Of course you can google terms you need to.
Here is a story of another woman who is a chimera who had similar legal issues:
http://abcnews.go.com/Primetime/shes-twin/story?id=2315693