they did escape with her!
but they came back or were re-captured. Máša managed to escape the second time and refused to come back and the ZOO respects that, because she does not hunt any of kept animals
and moreover, her babies (at least one) also managed to escape for the second time, but they came back from their own will, I think. Strange
but their exhibit is very natural, it is simply a fenced part of the forest, so although the fence is also underground, the animals somehow manage to leave! XD