Henry de Bromhead expects Sinoria to go on to bigger and better things after a successful debut over fences at Thurles.
The six-year-old won two of her first three starts over hurdles last season, including a Listed victory against the boys at Punchestown in February.
She subsequently journeyed across the Irish Sea for the Cheltenham Festival, but finished down the field in the Dawn Run Mares' Novices' Hurdle.
With the high-class Willie Mullins-trained mare Good Thyne Tara the even-money favourite, Sinoria was a 6-4 chance for the Go Racing At Thurles Mares Beginners Chase - and it was a straight shootout between the two from a long way out.
Always in front in the hands of Rachael Blackmore, Sinoria began to assert her authority before the home turn and an untidy leap at the final fence did not prevent her from winning by 12 lengths.
De Bromhead said: "Rachael was brilliant on her and she jumped great bar the last, when she probably got a bit lonely. It's the start you could only hope for and hopefully she will progress from there.
"The Grade Three mares' novice chase in Mallow (Cork) on Hilly Way Chase day is next on my mind for her. She'll go on most grounds and appreciates a nice bit of ease.
"She enjoys chasing and I'm delighted with her."
Jessica Harrington and Robbie Power combined to win the I.N.H. Stallion Owners EBF Rated Novice Hurdle with Silver Sheen.
The 3-1 shot readily pulled six and a half lengths clear of Allez Dance, with 13-8 favourite Royal Thief the same distance further away in third.
The trainer's daughter, Kate Harrington, said: "We always thought he was a nice horse and the soft ground really helps him.
"I bought him myself for £30,000 for John Turner last February and he is from the family of Moscow (Flyer). The first horse John had with Willie Mullins had Hurricane Fly in the page and he said we'll buy the one with Moscow (Flyer) in the page.
"We'll try to find another race like that before we let him loose into any higher company, but he couldn't have done it better there."
Having seen Footpad make an impressive start to his campaign in the feature event earlier in the afternoon, Willie Mullins completed a double in the concluding bumper with Asterion Forlonge.
Having won his only start in the point-to-point field, the five-year-old was bought for £290,000 at the Tattersalls Ireland Cheltenham Sale in February and now carries the colours of Joe Donnelly - the owner of Cheltenham Gold Cup hero Al Boum Photo.
He was the 1-4 favourite for his debut under rules in the Hill Fabrication Flat Race, but made hard work of it under the trainer's son, Patrick, digging deep to get the better of Watergate Lady by three-quarters of a length.
"The race didn't go to plan and I didn't give him a fantastic ride - he got me out of a hole," admitted Mullins junior.
"He had an injury last year and I'd imagine he'll go straight over hurdles now. He'll be a staying horse over hurdles and fences."