It's worth noting Shaw wasn't an unknown when Hocus Pocus came along. Her career began all the way back in 1981, taking in various bit parts over the years as well as a starring role as one of the Ladybugs. Naturally, the Disney festive fave was a defining moment for Shaw, setting her on the path to roles in Murder, She Wrote, Eyes Wide Shut, The Hills Have Eyes, 3:10 to Yuma, and plenty more besides. Most notably, she had a starring role in Ray Donovan, opposite Liev Schreiber.
Still, her extensive and expansive slate doesn't stop Hocus Pocus fans from associating Shaw with her most well-known character to the point they actually call her Allison in public. Thankfully, as she told Express in the UK, they're very respectful and generally "keep the 'Yabbos' comment to themselves."