She beat Venezuela's Maria Vento-Kabchi 6-2, 6-1 at the Australian hardcourt championships on the Gold Coast on Monday.
Coaching guru Nick Bollettieri, who briefly coached Martina Hingis in 1998, believes the game has moved on while she has been away.
The Swiss conceded she has no hope of surviving on the women's circuit unless she improves her serve and increases her all-round power.
The former world number one is to return to professional tennis next year.
India's Sania Mirza and her Czech partner Barbora Strycova defeated China's Chen Liang and Zhaoxuan Yang 6-1, 6-1 in the final to win the women's doubles titles at Toray Pan Pacific Open, in Tokyo, on Saturday.
Hingis said Federer now had to make sure he stayed focused on his training and is prepared to "say no".
Serena will be chasing her seventh grand slam title on Saturday against a 17-year-old who has taken her second Wimbledon by storm.
Leander Paes, named a reserve in India's Davis Cup team for the Uzbekistan tie, is in line to win his first title of the season, albeit on the Challenger Tour, with Canadian partner Adil Shamasdin.
The 22-year-old Swiss is devoting herself to perfecting her English.
Sania Mirza has enjoyed a dream run in the history Indian tennis this year. With two Grand Slam titles, 10 ATP crowns, in the WTA rankings, the Hyderabadi star continues to be World No 1.
She has always found her stupendous success on court go hand-in-hand with controversies off it and that is precisely the reason why Sania Mirza is hardly bothered about what a few people have to say about her.
Tennis star Sania Mirza arrived at the Games Village of the Rio Olympics and so did the table tennis squad while the Indian hockey team won its practice match against Spain.
Former world number one will play a comeback tournament in Thailand this month.
Indian tennis ace Leander Paes is set to partner Spanish legend Rafael Nadal in the men's doubles event at the 3,288,530 euro Paris Masters to be played on the indoor hard courts of the Palais Omnisports in Bercy next week.
Mirza moves on to a quarter-final against Indonesia's Angelique Widjaja.
Serbia's Ana Ivanovic beat former world number one Martina Hingis 6-2, 6-3 to capture her first Tier 1 title.
The teenager stunned champion Serena Williams 6-1 6-4 in the Wimbledon final to become the first Russian to win a singles title at the championships.
Sources close to Swiss tennis player Martina Hingis's camp have rubbished claims by her ex-husband that the 5-time Grand Slam champion and her mother once assaulted him.
The Swiss stuttered to a 6-3, 2-6, 6-3 win over Israel's Shahar Peer in the fourth round of the French Open.
The Swiss outclassed American Lisa Raymond 6-2, 6-2 to reach the second round of the French Open.
Martina Hingis made short work of Mashona Washington with a 6-1, 6-2 win in the first round of the Qatar Open
An elbow injury may force the Indian tennis ace to pull out of the Qatar Open, which begins in Doha from February 27.
India's Sania Mirza was eyeing her seventh Grand Slam title during the Australian Open mixed doubles final but it was not meant to be.
The Croatian was one of the hottest properties in tennis as a teenager before the personal turmoil of her upbringing caught up with her and she was forced to start all over again in 2008.
Sania Mirza has said that French Open is going to be the "toughest" for her and Swiss partner Martina Hingis as clay court is not among their favourite surfaces.
Indo-Australian pair of Mahesh Bhupathi and Nick Kyrgios failed to cross the opening hurdle of the men's doubles event, suffering a straight-set defeat against Lucas Pouille and Thanasi Kokkinakis in the French Open.
Tennis star Sania Mirza says she enjoyed incredible results in 2016 and it would be amazing if she could complete a Career Slam next year.
It is totally possible that I won't play top tennis again, because my feet will not allow it, Blick newspaper quoted her as saying.
Switzerland's Belinda Bencic became the first teenager in seven years to reach the top 10 of the WTA rankings after she climbed to ninth in the world on Monday.
Rediff.com takes a look at players who tested positive for use of banned substances over the years.
The 24-year-old Swiss lost 1-6 6-2 6-2 to Germany's Marlene Weingartner in the first round of the Thailand Open.
Sania Mirza officially became the first Indian woman tennis player to be ranked world number one in doubles. According to the latest rankings, the Indian ace rose three rungs to 7660 points, which enabled her dethrone Italy's Sara Errani (7640 points).
Sania Mirza officially became the first Indian woman tennis player to be ranked World No 1.
Leander Paes, on Sunday, won his first title of the season, combining with Canadian Adil Shamasdin to lift the Leon Challenger Tour tennis tournament's men's doubles trophy after a straight-set triumph in Leon.
Following his maiden appearance at the US Open, Saketh Myneni achieved a career-high rank of 137 in singles in the latest list, issued by the ATP.
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