In 1995, McGillicutty debuted in Extreme Championship Wrestling (ECW). Her backstory was that, while Raven and Tommy Dreamer (allegedly former childhood friends) had been attending a summer camp in their teens, they had met Beulah, who was overweight. Beulah had fallen in love with Tommy Dreamer, but he rejected her, so she slept with Raven. Raven's lackey Stevie Richards brought Beulah (now a slim model) to ECW so she could gain revenge on Dreamer by helping Raven. Beulah became Raven's valet, and suffered several piledrivers at the hands of Dreamer during the course of the feud.
At the same time, Beulah feuded with Francine and Luna Vachon, and was involved in several "catfights" with each of them. Her first match was on June 17, 1995, when she pinned Luna after Richards hit her with a chair. At House Party on January 7, 1996, she claimed that she was pregnant and told a shocked Raven that it was Dreamer's baby, intensifying their feud. On the January 16, 1996 episode of ECW Hardcore TV, Beulah left Raven and aligned herself with Dreamer. However, at Hostile City Showdown 1996, Shane Douglas informed Dreamer that Beulah was never pregnant, and also had been cheating on him. When Dreamer demanded to know who with (suspecting Douglas), Raven's new valet Kimona Wanalaya proclaimed that it was her, and she proceeded to kiss Beulah to the mat. After some hesitation, Dreamer kissed both women, proclaiming "I'll take em both, I'm hardcore!"
In 1997, Beulah and Dreamer teamed up for a few intergender tag team matches against Francine and Douglas, with Beulah surprising fans by performing moonsaults in the matches. Later in the same year she defeated Bill Alfonso.
When the ECW wrestlers invaded the World Wrestling Federation in 1997, appearing on an episode of Raw, Beulah was at Dreamer's side.
In 1998, Beulah was attacked by Justin Credible and was put out of action. She returned to help Dreamer feud with Credible and his entourage. A few months later, Beulah was written out of storylines via The Dudley Boyz breaking her neck with their Dudley Death Drop maneuver.
Beulah returned to the ring on June 12, 2005, at the World Wrestling Entertainment-produced ECW One Night Stand pay-per-view. She interfered in the main event, helping Tommy Dreamer and The Sandman, but their opponents, The Dudley Boyz, won despite her efforts. Beulah was involved in a catfight with Francine, who had just kicked Dreamer in the crotch.
On June 7, 2006, it was announced that Beulah would be in the corner of Dreamer and Terry Funk against then-heels, Mick Foley and Edge as an equalizer to Lita. On the day of the ECW One Night Stand pay-per-view, the tag match was later changed to a six-person mixed tag match pitting Edge, Foley, and Lita against Dreamer, Funk, and herself. Wrestling barefoot, Beulah handled Lita and appeared on the bottom of a catfight. Dreamer, Funk, and Beulah would lose the match when Edge speared and pinned Beulah.
Beulah appeared on the December 29, 2009 edition of ECW on SyFy. She and her twin daughters were sitting in the front row during Tommy Dreamer's last match in World Wrestling Entertainment.