Lilith Pleasant/theories

While the reason is never given, it is quite obvious that Lilith Pleasant's parents overwhelmingly favored Angela. Why is unknown. Place your theories here.

Theories

 * I think Daniel and Mary-Sue only wanted one child. It does appear to be that Angela was born first, since she always grew up before Lilith and (According to Daniel and Mary-Sue's memories) was born first, so maybe the parents were content with Angela but wasn't happy when they found out they had another child, and therefore probably didn't treat her with as much affection. I don't think they abused her though, since the Pleasants are over-confident and stuck-up perfectionists, they probably wanted to maintain that appearance, so Lilith wasn't abused, but she wasn't loved either. That's just my opinion.
 * The theory above is good, more I think only that Lilith is the rebel type of child just like Dustin Broke.
 * I also agree with the first one but mabey the Lilith was put up for adoption but was never taken because of her rebelous nature and so hoping that she would be taken they never taught her toddler skills?
 * i think that the pleasants were expecting only 1 child, and that was angela. i think that the doctor gave them the wrong info.i think that they had another name just in case and that name was lillth.thats the only way to me that it would make scence. from, bvbfan1
 * I'm convinced that Angela and Lilith were Daniel's "clones" just as Brandi's unborn son is her "clone". Otherwise they would have black hair and brown eyes.
 * Probably, acording to the first one, they wanted only one child, and then surprisingly had two, and they did, however, keep loving Angela and throwing Lilith away, but they did take care of her only because, if the social worker did get knowing about it, it would take Lilith AND Angela, so to don't have Angela been taken away along with Lilith, they did actually take care about Lilith, and obviously, didn't take the opportunity of having Lilith taken away when they aged Angela to teen. (sorry about crappy english, i'm brazillian)
 * i think that they were expecting only 1 child, which was angela. they probably had lillth over surprise. they probably just thought up a name, which was the name of lillth. from, bvbfan1
 * Probley Lillith was poor and unwanted so everyone turned against her she was proberly born mean and nasty but I think shees jelous about Angela being an Overachiver.BTW she sooooooo deserves that Dreamer kid.
 * I think Lilith was just different than her sister, and her parents couldn't appreciate it. Maybe when they fought, Angela tattled on Lilith's faults, and when Angela was mean to Lilith, she was to shy to tell her parents, so slowly they began to favor Angela.