‘– It is best to keep striving regardless of what the status is. That effort will not go to waste.’
Thank you Lal.
That princess was Visakha. Googling the name I came across several references (AN 1 chp 14; Dhp v 53; Dha 1.383 and viii.i. 243 ff). I am sure some one else can do better.
http://creative.sulekha.com/the-early-buddhist-women-stories-five-visakha
“3.1. When Visakha was about seven years old, the Buddha visited Bhaddiya with a large company of monks. Mendaka offered several gifts to the Sangha; and invited the Buddha and his monks to his mansion and offered hospitality for a fortnight. Visakha an active, inquisitive and a lively child played around the monks and the Buddha. She was always questioning about the things that the monks did and said; and about Dhamma. The Buddha was fond of the little girl.
3.2. It is said when the Buddha departed from Bhaddiya for Anguttarapa (another city in Anga province), Mendaka instructed his servants to follow the Buddha with abundant provisions, food and fresh milk; as also ghee and butter until the party reached its destination. (DhA.i.384)(Viii.i.243ff).”
And….
http://ariyamagga.net/story-visakha/:
“When Visakha was seven years old, the Buddha came on a tour to Bhaddiya. On that occasion, the rich man Mendaka took Visakha and her five hundred companions with him to pay homage to the Buddha. After hearing the discourse given by the Buddha, Visakha, her grandfather and all her five hundred companions attained Sotapatti Fruition.”