Svetlana got off the ground and took off into the air to meet Emily but as she did, she warped time to incredibly boost her speed to the point where there was no way Emily could follow or predict her actions.
But Emily did not have to predict Svetlana's movements because her surroundings were already thickly influenced by her control over reality so the moment Svetlana got close to her, the reality warp canceled out the time-warp and Svetlana's speed became normal so Emily could better follow it and retaliate or defend herself.
This was not the first time this will all happen as Svetlana had a habit of doing this ever since their battle began and they had both established to each other early on that they would only be canceling each other's Ordinance use on each other.
Svetlana could never warp Emily's time but she could manipulate the time around the attacks that were chucked at her by Emily and the same was true for Emily with her reality warps.