Keys retweeted many of the messages to give fans a clear understanding of the abuse tennis stars on the WTA receive.
The WTA reported after Keys' series of responses that the 22-year-old had her reasons for standing up to the abuse.
The world No. 11 has signed up to be an ambassador for the Fearlessly Girl organisation, which runs school programs to empower young girls.
Keys said after her loss to Rogers that simply went away from her game plan.
"I mean, she was all over my serve today," Keys said.
"I felt like that let me down, and I think she served well. And I feel like I just stopped doing what I should have. I feel like I did a pretty good job to get back in the first set, and I feel like I just stopped doing it. Then it kind of all slipped away from me pretty quick."