This is a picture of Lauren:

So, I'm giving you a short description of the characters, so you can have a more solid idea of the name.
Character 1: 15 years old. Cheerful, fun, inspiring, kind, charming and friendly. She's extrovert, people always admire her and is the center of attention. She knows how to convince others of what she wants. She likes to look good and have a great taste in clothes.
Character 2: 15 years old. Energetic, enthusiastic, persevering, strong, confident personality and convince others of her ideals. People trust her, so that provides her all facilities for her objectives. She is tenacious and a fighter, is relentless. People will love or hate, no middle ground awakens not go unnoticed.
Character 3: 15 years old. Understandably, compassionate, trustworthy, generous and protective, people follows her and want. It is capable of putting the happiness of others to hers. If she's wrong, forgive it usually can not be angry with her. She likes to live in harmony and balance to make it accurate. She loves music and activities the outdoors.
Character 4: 15 years old. Energetic, dynamic, strong, authoritative, efficient, controlled, she's capable of doing what she is proposed even in adversity. She enjoys studying and is very analytical. Does not have much faith in herself and hates to be criticized. Although known to many people but it is a loner. The people see her as someone authoritarian and nervous. As for her appearance, loves to care for her and cares a lot about fashion and dress and look good.
Character 5: 15 years old. She is sensitive and friendly. While friendly is introverted and somewhat reserved. She lacks faith in herself and because lack of faith that does not defend her convictions, and is generally easy to be persuaded by others. She is able to feel good to others and people appreciate it very much, see her as someone with a good character and that fits all situations.
Character 6: 15 years old. Awesome, driver, elegant, graceful, it makes her appear aristocratic and charismatic. People admire her by the image projected. In the interior is very compassionate and loves to focus on helping others. Anyway, it costs close to a person is able to help many, but not get involved much to a person.
I think she got all the personalities of a book or something.
Before I forget it, which last name do you prefer for them, Delawarr or Enhingson (en-hing-son)?
Thanks for helping!