It was at that moment that Jenny finally believed Damon, her daughter, no, Nessa was kidnapped. She didn't deserve to be her mother anymore, not after hiding the truth from her.
Delphine had requested to meet up if she wanted to meet Nessa ever again and to settle their past. She was not a fool, Jenny knew her sister had something up her sleeve and one of them might seriously end up dead.
The only reason her family had agreed for her to take Nessa in was that they all knew Delphine had lost her mind. Her sister was crazy and it was not a secret.
So Jenny decided to do the right thing this time, tell the truth and save Nessa. So she went to the only person who would believe her and had the power to do something before it was too late. Damon.
However, to her disappointment, she called Damon's number and he didn't answer. She tried over and over till she tried his line over twenty times and yet there was no answer.