Perhaps if she is still on paper skating for Sambo then Sambo can demand a portion of any prize money she wins?
I get the impression unless a skater is retiring leaving a coach in Russia is never going to be pleasant. And for what's worth Eteri did not complain about Kostornaia not saying goodbye
It was mentioned on the Russian ladies board (don't know how true it is) that Tarakanova came back to figure skating (she supposedly quit the sport when she left Eteri) it was after the transfer window and that was partially why she ended up with Plushenko since his is a private facility.
I hope the Fed learned from the Lipnitskaia fiasco to not attempt to force a coaching relationship. It was rumored that Lipnitskaia had sought to leave Eteri sooner than she did but the Fed stepped in and stopped it. If true, imagine how much fun that was for everyone involved.
The Fed needs to come up with some 'severance option' like a fine the skater pays to cover the cost of the training from the then-former coach, or something that doesn't involve a continued partnership once at least 1 of the parties involved has expressed a desire to not be in a partnership with the other.