The three-year-old filly won three in a row earlier in the season, but her improvement appeared to have levelled out on her last two outings.
With Danny Sheehy taking 5lb off, she only had 8st 1lb on her back and was prominent throughout on the far side, which was thought not to be the place to be but the low numbers dominated.
Sent off at 20-1, the Lady O’Reilly-owned youngster looks to have a bright future as she came home three-quarters of a length clear of Smash Williams, with My Amigo faring best of the British raiders in third.
“It’s hard to be confident in races like that, but we thought we had her really good,” said Lynam.
“Danny said there wasn’t a lot of pace on the far side, so he had to let her roll.
“Lady O’Reilly has been with me a long long time and it’s nice to train a nice winner for her.
“I suppose we’ll try to get a bit of valuable black type for her later on. She won the price of a few drinks today anyway!”
Lynam added: “The trainer could do with her staying in training next year, as he’s very low on ammunition, so I hope she does, but we’ll wait and see.
“She was bought by my daughter, Amy, as a foal, it was her very first pinhook. That was her first buy and it turned out very lucky.
“I bought her off her as a yearling and I had to give her a good bit of profit!”