From what i understood, she could freely move between both.
there is no movement going on. think of it as more like computers than people. it's like trying to delete a program by getting rid of the shortcut when only the shortcut exists in your universe and the program is fully aware of everything going on to it as the two are directly connected and there's an active connection between them.
and please, she's faster than him in the first place. hell, faster than anything in dbz there.
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The future must protect the clone's past.
"Maybe it's a tentacle, molesting the planet itself. - Aschen Brodel.