She is plump and always looks grave. She has a sharp tongue.
However, "The Wheel of Time Companion" describes her level of strength as 19(7) which is not so low. Therefore, she has the ability to open a gateway alone to Travel and is only weak in relation to the other members of the embassy; in fact, she was the weakest of the nine only after Valinde Nathenos.
She adhered to the Aes Sedai hierarchy by deferring to more powerful sisters, but could grumble quietly even while doing so.
Berenicia was born in 838 NE in the Border Marches in Shienar. She went to the White Tower in 854 NE. After spending eight years as a novice and six years as Accepted, she was raised to the shawl in 868 NE.
She has a Warder.
She is part of the Salidar delegation sent to greet Rand al'Thor in Caemlyn. She Heals Demira Eriff when she is stabbed by false Aiel. After the delegation is dissolved she escorts all the Two Rivers girls wanting to become novices back to Salidar. She would agree with many of Romanda's positions.