Speaking after her defeat at Wimbledon, Serena admitted she really wanted to win.
She returned to surgery to have another procedure to prevent more clots in her lungs, and was bedridden for six weeks following the birth.
In her fourth tournament back, just 10 months after becoming a mother, she fought her way through the Wimbledon field to reach the final.
Her 10th Wimbledon final ended in disappointment though.
"Serena Williams will be holding a trophy again soon".
Kerber endured a hard 2017 after her most successful campaign the previous year and went without a tournament win for 12 months.
When asked if the delayed start to the women's final had any impact on hr preparations, she pointed out that throughout the whole tournament, she had never had a first match on start time. I have so much to look forward to.
A lot was said during Williams' comeback about her losing her top-ranked status after taking time off to have a baby. Last time, she found it hard to cope with all the things that go with being the world's top-ranked player; this time, she feels she will be better equipped to cope.
"To share with her a court, it's always an honor for me because I know she's pushing me to the limits I have to play my best tennis", Kerber said. It would have been her eighth win.
"She'll get right back on the horse". I want to get as many as I can, starting with... He noted that after her pregnancy lead to a pulmonary embolism that almost cost Williams her life.
She affixed the badge to her white T-shirt and laughed as she proudly played with it at the start of her news conference.
Kerber said of her win: "It's just a dream come true". When you do this, I think you can enjoy it more.
Beaten but unbowed, Serena is vowing to continue her relentless pursuit of tennis's most elusive feat despite falling tantalisingly short at Wimbledon. There is absolutely no doubt that Williams has her eye on surpassing Margaret Court's record, but it will have to wait - but the day is coming. That she could return to this level of play so fast and so successfully was wonderful in its own right, silver plate or no.
She was later seen smiling as she cheered on pal Serena as she collected her runners up prize. She's always able to raise her level.
The match - which began on Friday evening - finished after 5 hours, 16 minutes as Djokovic secured the only break of the fifth set.