The daughter of Top Echelon was bred by Wallace’s partner Gold Coast veterinarian doctor Jenna Poppitt.
Cossie is coming off a last start third to the Kevin Kemp-trained Five Oxford over the 1050 metre dash at Doomben on October 22.
“She had a wide draw that day and I reckon she would have won had she drawn better,” Wallace said.
“It was no fault of the jockey but she never saw the track that day.
“She’s going well and she won’t mind it if the track is wet as she handles wet or dry.
“I’m sure she’ll race well again as she’s been racing so well lately.”
Wallace has beaten a series of health problems and has made full recovery following four heart operations in recent years.
“I had another heart operation not long ago but I’m feeling fine now,” Wallace said.
“I’m full of stents and I’ve even got a balloon in now.”
Wallace shows no signs of slowing down and will be delighted if Cossie gives him another city winner.
“Cossie gave me my last metropolitan winner when she won at Ipswich last month,” he said.
“She’s been our stable star and she keeps the wolf from the door.”