Provide a summary of Nora Forster's career based on this passage.

Forster began her work as a music promoter in Munich. Her home there became a meeting place for "rock royalty".[5] Some of the acts she worked with in Germany were Jimi Hendrix, Wishbone Ash and Yes. She found German society to be too restricting,[2] and decided to move to London with her daughter in the latter half of the 1960s.[3] Their first flat was located in a "cold, damp and dark" basement in West London, near the Chelsea football ground. Following that they moved to a small house off Gowrie Road in South London. During this time she came to be called a "Punk Mummy Warrior" who guided her daughter, Ari Up's musical pursuits and supported the development of her band, The Slits, when Ari was just fourteen or fifteen. Forster hosted numerous musician house guests, and among them was Neneh Cherry, the teenage step-daughter of Don Cherry. Cherry performed backing vocal with The Slits for a time.[2]

During the 1960s and 70s, Forster was part of the bohemian scene in London.[6] Starting in the late 1960s Forster's home in Shepherd's Bush became a crash pad, salon, and meeting place for rock musicians including Joe Strummer of The Clash, Jimi Hendrix, Jon Anderson of the band Yes, and many other bands.[1][7] She helped to financially support the punk bands The Slits, the Sex Pistols and The Clash.[8]

Nora Foster helped numerous bands and musical artists develop their careers in Germany and London. She would house them, financially support them, and promote their upcoming concerts and album releases. Some notable artists she helped included The Clash, The Slits, and Jimi Hendrix. Her homes were well known as meeting places for "rock royalty."