"We made hard work of it but had that little bit extra and deserved the win," said Arsenal boss Laura Harvey.
"In the end though, it was going to take a moment of quality to win the game and fortunately Kim Little provided that with a great goal.
"We've been disappointed not to win the FA Cup this season, but we've now got two domestic trophies in the bag and we're in the last 16 of the Champions League so it's still been a good year for us."
Blues boss David Parker, whose team were this year's FA Cup winners, said: "We had a couple of chances, but Arsenal were the better team.
"We had a game plan that we'd put together, but after working hard and doing well in the first half we never got going in the second half.
"We're sick of Arsenal winning trophies, but we have got a big one ourselves this year and hopefully we can get more next season."