Another Jareau? [NOT A JEID SHIP]

[NOT A JEID SHIP]

What happens when JJ's sister starts working at the BAU? What will Reid say when he meets her?

~Prologue~
"Abby! Oh my god I missed you so much!" The blond shouted when she saw her younger sister enter the bureau unsurely "JJ! Thank god! Did I go into the right place? Am I late? Where's um Agent Hotchners office?" The skinny brunette asked "no your not late and Hotch's office is up there you'll see it, it has his name on the door." JJ told her sister. "Ok thank you, I'll meet the team afterwards" "I know. I'll let em know" the two girls finished before splitting ways.