About This Answer
A mother with a family, who practises generosity, sīla and meditation, asks whether a layperson must ordain to become an arahant, and whether a layperson can become a stream-enterer. Ajahn Dtun answers that a monastic keeping the 227 precepts can more readily reach arahantship, though it is still difficult, because they have given up work and family life to practise fully. For a householder it is harder: to reach the higher stages of non-returner or arahant, one must keep the eight precepts, including celibacy, and give up family life. A householder with a family can, however, become a stream-enterer.
So yes, she has a chance. He describes the qualities of a stream-enterer: firm faith that the Buddha, Dhamma and Saṅgha truly lead beyond suffering, and faith in kamma, that good actions bring good results and bad actions bad results. With this faith one does good, keeps sīla, meditates and contemplates the body as impermanent and not-self, until right view arises that the body is not the mind and the mind is not the body.
One cannot order the body not to fall ill, age or break up. When this is clearly seen, greed and anger weaken, ill will no longer lingers, and there is no fear of illness or death, since the body is known to be made of the elements. Such a person keeps the five precepts as normal and will not intentionally break them.