Romford's Women ended their inaugural season in style as they put six past Toby, with all of the goals coming in the last 30 minutes.
There was no hint of the carnage to come in the first half with the scoreline still blank at the interval.
The visitors made a strong start, with a perfectly timed tackle by Emily Beard breaking up an early attack and fellow central defender Paulina Saviciute heading off the line within the first five minutes.
But Boro grew into the game, with Venetia Stuart and Holly Winser gaining control of midfield, with a potential penalty for a foul on Lillie Toms on 18 minutes turned down.
Toms later had the best chance for Boro but saw her effort saved, while the visitors fired narrowly wide from a corner on the stroke of half-time.
Full-back Sian Lakes was forced off with a leg injury just before the break, to be replaced by under-16 squad captain Aliya Sambani.
And Toby had the opening chance of the second period when Amy Jacobs broke free but saw her effort saved by stand-in keeper Evie Doyle-Love.
That would prove crucial as Boro opened the scoring when Shannon Simpson latched on to a long clearance from Doyle-Love on 65 minutes and fired home.
Simpson doubled her tally on 75 minutes, taking a pass from Chloe Eastwell and cutting past her marker to smash home her 18th goal of a fine season.
A minute later, Francisca Lafaurie-Tull put the game beyond doubt with a spectacular third as she picked up a loose ball on the edge of the box and rifled home an outstanding first-time strike.
Not to be outdone, with two minutes left Sharmari Crawford picked out Eastwell with a corner to the edge of the box and she capped another excellent display by slamming home a fine first-time finish.
The best goal of the day came two minutes into injury time as Boro went from back to front with a lovely flowing move as Stuart, Darcie Colkett and Simpson combined to free Lafaurie-Tull for her second.
Boro made it 6-0 when Toms slalomed through to slot home as Doyle-Love kept a third clean sheet in four games as a stand-in for regular keeper Jamie Williams, conceding just once.
And the win left the Belles second in the Essex Premier Division, but with others having games in hand, their promotion push will likely fall just short, although a top-four finish looks likely.
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