Changeling (Nexus 5) by Paul D. E. Mitchell
Approx. 230,980 words.
Published on May 23, 2011.
Gemma Lewis has recovered from her injuries yet the hatred against her and her family continues. The trillionaire, Albert Maeth, sets up the Foundation to destroy both the family and the powerful House of All Faith that reveres them. Gemma realises that the Design is moving to destroy them when her sister Tamsin Lewis is resurrected - only she's a now a changeling and their only hope of survival.