First appearance Edit
Lydia first appearance is in Bad Girls don't die. She is part of the doom squad and one of Alexis' friends. she is, or so described by Alexis "obnoxious
In From Bad to Cursed, her mother, Mrs Small, was mentioned by Lydia that she drank. It is also mentioned in the same chapter that Mr Small had been fired from his job.
Lydia died because of Aralt. She is suffocated after calling to Aralt, with Alexis helplessly watching on. After she dies she wants to take revenge of the ones she think must die instead of her. So she starts attacking Alexis. This continues on in As Dead As it Gets.