It was a steady start to the second-half with Sussex looking to control possession and it took until the 68th minute for them to find the fifth when Georgia Collier broke down the right, whipped a dangerous ball in that eluded Tierney and nestled in at the far post.
Then, not even a minute later, Danielle Boyd made it 6-1 when she drove through the middle of Jersey’s defence and fired low into the far corner.
Collier wasted no time in grabbing her second of the match and Sussex's seventh, with an almost identical goal to her first. She broke down the right and, again, beat Tierney with a cross that flew over the goalkeeper before dipping in at the far post.
Just a few minutes later, Georgia Bowen grabbed her second of the match with probably the pick of the bunch; the winger cut inside down the left and rifled a powerful shot into the far top corner to complete the scoring at 8-1 with little over 10 minutes remaining.
Following the victory Sussex manager, Karl Davy, said: “There were a lot of changes to the squad and the players that came in did well. We made a couple of tactical changes during the game because certain things weren't working, and the players reacted in the way we wanted them to which got us the result in the end.
“We were particularly good on set pieces today, I was very impressed with that. I definitely taught her (Collier) those cross come shots, I always said if you’re going to cross it, cross it into the back of the net!
“We asked the players to go out and work hard to represent their county and they’ve certainly done that and themselves proud!”