Zahra has been booked to ride Tenytris in Saturday's feature sprint but will be aboard Jimmysstar if it is decided the gelding heads straight to William Reid.
Final acceptances for the Newmarket Handicap are taken on Wednesday morning.
"Mark's coming back from his 'fake broken leg', but he was pretty keen to get down here this morning and he worked super," Maher joked.
"I will have a chat to the owners, and it will be either this race or the William Reid, but I think Jimmy is coming up really well
"We only gave him a short time off and we wanted to keep him active.
"The planning has been to only have one run here and then go to Sydney for the T J and the All-Aged, but I'll have a chat to the owners after today's work."
Should the stable decide against starting Jimmysstar on Saturday, Benedetta will run for Maher after her pleasing return when third in the Group 1 Lightning Stakes (1000m) at Flemington on February 14.
Benedetta meets Lightning winner Tentyris on 4kg better weight terms on Saturday for her 1-½ length defeat.