Who is Beryl Lee from Cloudstreet and what is their importance?

Beryl Lee is a widow whom Oriel Lamb meets at the Anzac Club. Oriel immediately recognizes that Beryl is lonely, and invites her to stay at Cloudstreet. Beryl, a hard worker and a kind woman, stays there for some time, but eventually confesses to Lester that she has a crush on him and therefore she must leave the house. She enters a Catholic convent.