Millard scored two tries for Scotland at Surrey Sports Park
Scotland's women remained on course to reach their target of a fifth to eighth place finish at the Rugby World Cup with a convincing win over Sweden.
Tries from Lindsay Wheeler, Lucy Millard, Donna Kennedy, Katy Green and another from Millard ensured that the Scots secured a vital bonus point.
Scotland captain Lynne Reid said: "In that game, we came out firing.
"It was a tough match - the legs are feeling it now - but it's time to regroup and prepare for our next game."
The Scots, who had lost to Canada and France in their first two matches, were 32-0 ahead - Nicola Halfpenny kicking two conversions and a penalty - before Johanna Norberg's late reply at Surrey Sports Park.
Reid was thankful for a quick start compared to their first two matches.
"It made a difference, but we continued to play our style of rugby - what really made the difference was the execution of final skills," she told the Scottish Rugby Union website.
France are top of Pool C after beating Canada 23-8.
Scotland: Halfpenny, Green, Millard, Fitzpatrick, Johnston, Kerr, Gill, Lockhart, Macdonald, McCord, Brown, Wheeler, Reid (capt), Slaven, Kennedy.
Replacements: Walker (on for Macdonald), Dickens (on for McCord), Moffat (on for Wheeler), Murphy (on for Kennedy), Dalgliesh (on for Gill), Griffith (on for Kerr), Newton (on for Halfpenny).
Sweden: Ohman, Akerman, Hogberg, Lahti, Boman, Osterberg, Swartz, Ygge, Ryberg, Andersson-Hall (capt), Hedlund, Norberg, Johansson-Giebat, Westin-Vines, Melin.
Replacements: Olovsson, Storckenfeldt, Svangren, Björkman, Andersson, Torstensson, Lindholm.
Referee: Sarah Corrigan (Australia)
Green scored a try for Scotland against Sweden