Luna Verdict

“I reject you, Jacqueline! You are not worthy to be my mate and the Luna of this Pack!” Alpha Gabby shouted at me.
“But I never did…” I tried, but he stopped me halfway.
“One more word from you, and I will have your tongue cut off!” Gabby said angrily.
I have been rejected.
_ _ _ _ _ _ 
Gabby and Jacqueline were the sweetest couples of their time. After they met during a one-night stand, they fell in love and eventually became mates.
Gabby was an Alpha, making Jacqueline a Luna.
But their relationship suffers a collision when Gabby is manipulated by his friends and family. He rejects Jacqueline, but he never falls out of love with her. The same applies to Jacqueline.
Jacqueline is tormented after this incident, but she eventually comes across Nathan, a kind Alpha.
She finds out she is pregnant with Gabby's child, but Nathan chooses to take care of her and her unborn baby.
Eventually, Gabby wants Jacqueline back, but Nathan wants her to stay with him. Both Alphas are ready to be at loggerheads to have Jacqueline.
What will be her choice?
What will be the aftermath of her choice?