The defending Flushing Meadows champion showed glimpses of her best tennis in Cincinnati as she knocked out Serena Williams and Victoria Azarenka before losing 7-5 6-4 to American Jessica Pegula.
Raducanu felt herself playing with some of the same freedom she displayed at last year's US Open, and she told reporters: "I think this week was a great step for me.
"In the past year I think it's probably the first tournament or one of the few tournaments that I have actually started going for my shots more.
"I think that recently I was kind of playing and hoping they would miss, and I think I was pushing the ball around a lot more. This week I kind of just was like, 'Look, I'm just going to try, I don't care if I make errors, but I'm just going to overhit if anything'.
"I'm pretty proud of how I did this week, and I think it's a great step to move forward."
Pegula is the top-ranked American, sitting five places above Raducanu at eighth in the world, and she was ultimately too consistent for the British player.
But Raducanu matched her for much of the contest and she can now look forward to trying to build and improve on these displays in New York, with the US Open beginning on August 29.
"I just love New York as a city, so I can't wait to go back," said Raducanu. "I really have been craving a bagel for the last year. It's one of my favourite cities out there.
"But then, of course, the tournament, I've got special memories there from the juniors, I made quarters, and then last year obviously that happened. I'm looking forward to it."