"As you can imagine, she's pretty flat," Mooney said. "She doesn't want to miss any games for Australia and unfortunately for her, she's missed a few in the last few months. We'll put our arm around her, wait and see what the [medical] staff say and what the prognosis is.

"But, certainly, she's a key member of our playing group both on and off the field and we know what impact she can have to the outcome of the results on field. So, we'll be keeping a close eye on making sure she's okay mentally, but also doing all the right things with [the sports science sports medicine staff] well.

Australia also had to contend with allrounder Ashleigh Gardner being ruled out with a calf injury. She will be assessed again ahead of the second T20I in Canberra.

The injury to Healy meant that Australia pushed back announcing their squad for the day-night Test at the MCG which had been due to be named during the T20I on Monday.

"Alyssa has got a stress response in her foot," head of high performance Shawn Flegler told Fox Cricket. "We're going to try and get a little bit more information before we make a call on her. It's a big call for Alyssa. Test captain as well. So we'll wait and see on what we come up with over the next 24-48 hours."

"We've got a selector meeting tomorrow morning. We'll see what plays out. We're not going to rush into it. There's still a week or so before the Test match

After returning from the plantar fascia injury sustained at the World Cup, Healy had her WBBL cut short by a knee problem which also meant she played as a batter only in the ODIs against New Zealand in December having missed the earlier home series against India.

She returned to keeping duties for the three ODIs against England with the matches taking place in six days. The schedule is also tight for the T20I series with games in Canberra on January 23 then Adelaide on January 25.

Even if Healy is able to play a part in either of those, there will be major questions over whether she can sustain the workload of a Test match, especially as a wicketkeeper.

Depending on the prognosis for Healy, her participation in the WPL and the T20I tour of New Zealand in late March could also be in doubt.