Since providing the Lambourn handler with his first Royal Ascot winner in the Sandringham Stakes in June, the daughter of Mastercraftsman has been held twice in Listed company, most recently finishing a close second at ParisLongchamp.
The Bjorn Nielsen-owned three-year-old will be kept at the same level on her next start in either the Prix Coronation at Saint-Cloud or the Muhaarar British EBF Rosemary Stakes at Newmarket.
Walker said: “She was only beaten a head the other day, but ran great. She had to do the donkey work and make the running and she got beaten on the line. That was Ascot-level form so that was great.
“We still think she is better than that. She will be a lovely filly next year. Hopefully we will try to win a Listed race this year then put her away.
“She won’t go for the Sun Chariot. There are a couple of options.
“There is a Listed race at Saint-Cloud in just under a couple of weeks, although that might come a bit quick, then there is the Rosemary Stakes at Newmarket. She will aim for one of those.”
A return to America is on the cards for Agrotera’s stablemate Indian Blessing, with Walker earmarking the Grade One First Lady Stakes at Keeneland as her next target.
The four-year-old daughter of Sepoy ran a career-best on her most recent start, finishing third in a Grade Two contest at Saratoga last month.
Walker said: “We sat last for much of the race and she has ended up finishing third, but she did very well. We are going to tilt at windmills a little bit again with her.
“She is not a Group One filly here, but we think she could be over there. She will head back to America now for the First Lady Stakes at Keeneland in October.
“It’s a ‘win and you’re in’ for the Breeders’ Cup. The dream would be that she wins that and stays out there to head to Churchill Downs a month later.”