From this videoconference talk from 21 February 2020, Ajahn Anan discusses the great Bhikkhuni Sigalamata Theri, foremost in faith out of the Bhikkhuni Sangha, and her son, Sigala.

Two excerpts: "The Buddha knew she was there and that she had a still mind, her faith was at a good level, and then the Buddha gave a talk about the foundations of faith. Sigalamata understood and attained to arahantship. The Buddha established her as being foremost out of all the bhikkhunis in gaining liberation through faith.

"If our faith drops, then think of arahant bhikkhuni Sigalamata, and this can raise our faith. Our faith grows bit by bit, like drops of water falling into an open vessel."

Note: One can read this talk and others at the Wat Marp Jan 'Reflections' page, which also includes questions and answers with Ajahn Anan, which are not in the audio files. See: https://watmarpjan.org/en/dhamma-reflections/reflections-archive/