Canberra has won two W-League championships and three premierships - most recently the season before Garriock arrived. But the former Matildas star has won just seven of her 21 games in charge.
United's best is stunning but their worst is abysmal and road trips have proved a real struggle this season,with four losses and a draw from five matches.
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But their home record is strong and they remain unbeaten at McKellar Park this campaign,with a chance to extend that run against Adelaide United on Sunday.
Karly Roestbakken became the second Canberra player nominated for young footballer of the year this season after she followed Ellie Carpenter by collecting the December nod on Wednesday.
Garriock has started the 17-year-old in every game this season and Roestbakken backed her coach to turn things around next summer.
"She’s always going to back us and she's going to back the way she wants to play,"Roestbakken said.