Out in lane eight, the 26-year-old finish fifth in a time of 54.86seconds and was initially disappointed having run more than half a second off her personal best which would have been good enough for bronze.
However after picking up that colour in the 4x400m relay the following evening, and having had time to digest her performance in Russia, the Scot returned home full of confidence to take into next season.
And, with the Commonwealth Games taking place on her doorstep next summer in Glasgow, Child is confident of surpassing her exploits in Russia and upgrading the silver she won at Delhi 2010 to gold in Scotland.
"Moscow was a really good World Championships for me. I think if you had said to me at the start of the year that I would finish fifth in the world I wouldn’t have believed it," said Child.
"And then for the relay team to win a bronze was the icing on the cake and to actually come home with a medal was great and it was a great end to what has been a good season for me.
"Initially I was a bit disappointed because you look up at the scoreboard and you see the times that won the medals and you think 'I know I'm capable of doing that'.
"But having reflected on it I'm delighted with how it all went. Now I just am looking to build on what I've done this year. I won't make any drastic changes from what I have been doing.
"But I want to work a bit more on my speed and my hurdle technique and combine the two so when it comes to the season I'll be in great shape.
"I think it's given me the confidence that I can just go and really contend with the girls on the world stage and the encouraging thing is I was the first Commonwealth athlete in the race.
"So that bodes well for next year and it has given me the confidence that if I can go to the World Championships and perform well why can't I go and do that at Glasgow."
As the focus now turns to next summer's Commonwealth Games, Child was unveiled as a Home Nation ambassador for energy company SSE, who are an official partner of Glasgow 2014.
And, given the passionate nature of the Scottish public, Child believes she will have the foundations laid for a gold-medal assault.
"It means a lot to be named as one of SSE's Home Nation ambassadors as Scots are pretty patriotic and hopefully I can go and do everybody proud next year in Glasgow," she added.
"The home support does give us advantage over everybody else and I think everybody will be treated to a great showing of events across all the sports.
"I won silver in Delhi so it would be great to go one better in front of my home support and get gold. I know obviously it's going to be very challenging but if I can go there and perform to my best hopefully that's enough to win.”