Anya definitely has had some exposure to a medical/genetics environment early in life. There are very few 4-6 year olds that can use words like clone and chimera as fluently as she does. The same exposure probably explains her knowledge of Latin, which is the most common ancient language prep schools teach.
Yes, extreme violence+ethnic cleansing efforts can lead to the emergence of stable national identities. This process could be applied on a global scale to give you the results you are looking for.