Hey there! When I first saw its leaves I also thought that it could be at least a family of the Begoniaceae, the big hard leaves and stems suggest indeed that they could be related. But I also googled them in an effort to help you, and atm I haven't found the exact one. I did find though another species looking a lot alike yours: an african violet. At first glance I thought I had found it, but taking a better look at the center of the flowers and I noticed the scalloped leaves had a slightly different size. Same with its flowers, and trichomes all over the stems. What do you think? Maybe they're related as well? I'll leave here a couple of pics and their links. I'll try to google a little more in a while. Take care, cheers!
"Kaliza" Source
Getting closer. Thanks.