Drive To The Origin Realm

Brienne never doubted whether she was going to be successful. She was a summoner with a beast at Second Plane; what's there to doubt about mere Soul Projection that even 16-year-olds are taught?

So, what she doubted was the quality of her success. And as proof of her power, her result was high quality.

Now, Brienne could find her niece. Although there wasn't a strong Ancestral Soul Imprint between her and her niece, Scarlett, Brienne had Ancestral Soul Imprint with her brother, Arnold.

This being so, Brienne used her Ancestral Soul Imprint with her brother to link it to her niece, so therefore projecting her soul can help her find where her niece's soul is on the current Earth before her niece can enter an Origin Realm where such connections would "lose signal."

Earth was vast, and there were so many people, but she focused on the direction of her bloodline, remaining calm and composed.

This process was successfully achieved!