Marco Smith continued telling Isabella the truth-
Third Person's POV-
{Isabella's past flashback}-
~revelation of hidden past~
Isabella is the sister of Marco Smith, he is her real brother, her real family is not the Gomez family, her real parents are- Alpha Issac Smith and his Luna- Harlin Smith(currently known as parents of Marco Smith) but now it is revealed as her (Isabella's) parents...
~back story- When Isabella born in Smith family all were very happy, specially her elder brother Marco Smith to have such a beautiful sister, as when his mother was pregnant he always wished to have a sister and now when Isabella born he was the only one who first carried her and promised her and himself to always protect her,
her(Isabella's real mother) Harlin Smith is a human and her father Issac Smith is an Alpha and Marco Smith her brother is now the Alpha of his pack(told before),
but when Isabella born they discovered that she is not a werewolf, she born as a normal human, she was like her mother a human,
the whole family was very happy to have such a sweet and beautiful daughter,
but suddenly one night a gang of rougues attacked their pack, the pack was not ready for the attack, they tried their best along with Alpha Issac to protect his Luna, their son and the newly born baby Isabella, after a long fight Alpha Issac conquered them, but there were still many rougues who targeted their pack,
as Alpha Issac lost his many strongest pack soldiers his pack becomes weak, he wanted support of another pack so that he could protect his pack and his family,
a few days later he was informed that a pack wanted to help his(Alpha Issac's) pack, at that day he met Alpha Darth(who wanted to help Alpha Issac's pack) he has the strongest pack in Amsterdam,
Alpha Darth within a few days became very friendly with Alpha Issac, his pack helped Alpha Issac's pack in every possible way, they together defeated the rest of the hidden rougues,
later Alpha Darth told Alpha Issac that he had a five years old son named Norman(future Alpha of Alpha Darth's pack) and he wanted to make his daughter Isabella as his son's future Luna, because he wanted to make more bond with his(Alpha Issac's) family,
at that time Alpha Issac agreed with his offer of making his daughter(Isabella) his son(Norman's) future Luna, but he didn't knew about Alpha Darth's dark secret his real intentions,(which he had hidden to everyone),
as Alpha Issac thought him as a good person, because he and his pack helped him to protect his pack and family from rougues, he promised him and happily accept him in his family...