Giving the judges something they're familiar with, something she's had success with, yet isn't overexposed sounds like a good idea to me. Not usually a fan of reusing programs but Tosca is already great and still has so much potential.
Yes, she just announced it: https://twitter.com/MedvedevaNation/status/1109105339851554816?s=19
What did I miss? What was awkward about her behavior? Dont get it.
Are you talking about the picture with Eteri and co.? If so, nothing about her behaviour was akward at all. Instead it was a bit of a weird and akward situation to be in but she handled it very well.