Tacitus, Nero and Agrippina

Section IId- lines 11-15

satis constitit exstitisse proditorem, et Agrippinam, auditis
insidiis, ambiguam an crederet sella Bias pervectam esse. ibi
blandimentum sublevavit metum: comiter excepta est
superque ipsum collocata. Nero modo familiaritate iuvenili se
gerebat, modo adductus erat, quasi seria consociaret.

It was generally agreed that a traitor had emerged, and Agrippina, when she heard about the plot, uncertain whether to believe it, was carried in a chair to Baiae. There flattery relieved her fear. She was recieved politely and placed at the table above (Nero) himself, Nero sometimes behaved himself with youthful familiarity, sometimes he was withdrawn as if involved with serious things.