"That makes it even more special," Sweeney said of Schlichtig's connection to both titles.
Haddon Heights got big hits from Kristen Resh (RBI double) and Mariah Hans (triple, run) to take a 3-0 lead after four innings.
But Saddle Brook battled back to tie the score at 3 in the top of the fifth.
"We didn't panic," Sweeney said. "We're a team of fighters. I knew we would fight back."
The Garnets took a 5-3 lead in the bottom of the sixth.
Becky Transue walked and Ali Bastien punched a single to center to start the rally. With two outs, Resh delivered an infield single to load the bases.
Thomas went to the plate with a chance to give her team the lead.
"You live for those opportunities," Thomas said.
She fell behind in the count, 1-2, but poked a pop-up over the third baseman's head for a two-run single.
"I was just trying to make contact," Thomas said. "You make contact, good things will happen."
Sweeney took the mound in the top of the seventh determined to finish her career with a flourish.
She got the final out with a strikeout, threw her arms in the air, and was mobbed by her teammates.
"We've been working for this for so long," Sweeney said. "To end my career in the state championship, it's overwhelming. It's the best feeling in the world."
Saddle Brook 000 030 0 - 3 11 1
Haddon Heights 011 102 x - 5 8 2
WP: Shayla Sweeney. LP: Danielle Archibold.
2B: HH-Kristen Resh; SB-Natalie Alvarez. 3B: HH-Mariah Hans.
Contact Phil Anastasia at panastasia@firstname.lastname@example.org. Follow @PhilAnastasia on Twitter. Read his blog, "Jersey Side Sports," at www.inquirer.com/