Thookatha
sarNie Elites
ok, here's just my take on it. i think they are all sisters, because nok c made many comments about rojt and pojt...like how "there mother's blood is strong" (to provoke them in his anger) yet he also states that rojt and pojt can not be as degrading as taew because they "share the same mother's and father's blood". so those two comments alone show you that he thinks lowly of rojt and pojt's mother yet appreciates them because they have his blood too...making them "better" than taew.
as for nok j, she must have had rojt and pojt first, and was pregnant with taew at the time she lost her memory. the scene at the beginning of the lakorn showed her running frantically during some kind of bombing. she got hit by a car and hits her head causing her to lose her memory. that's why she could only appreciate taew, not rojt and pojt too. if she could remember rojt and pojt, we would have gotten more clues. but that's why it's a little more exciting. haha
as for nok j, she must have had rojt and pojt first, and was pregnant with taew at the time she lost her memory. the scene at the beginning of the lakorn showed her running frantically during some kind of bombing. she got hit by a car and hits her head causing her to lose her memory. that's why she could only appreciate taew, not rojt and pojt too. if she could remember rojt and pojt, we would have gotten more clues. but that's why it's a little more exciting. haha