The centre back starred as Bournemouth beat Plymouth Argyle 1-0 in the National League Cup final at QPR on Saturday.
The team will be hoping that the victory over their Devon rivals will help them to gain momentum and chase Argyle down in the table to at least secure a playoff spot for promotion to WSL2.
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As it stands, the Cherries trail Argyle by six points, but with two games in hand. There is a four-goal goal difference between the two, in Plymouth’s favour, too.
The Dorset side have four games left to play of the league campaign, and Hennessy told the Daily Echo that the cup final victory can be the game to turn the momentum in the league their way.
“I think it's like a restart now,” she said.
“That's just given us a bit of a push on and a bit of a spring in our step to get things going again.
“And the league and playoff game is not out of our reach.
“I think that was just a little reset for us and we just can't wait to get going now for the next four games and just hopefully get over the line.”