The shots buzzed through the woods as they left Tellie's extended barrel and the light flashes from the rifle were not seen until the Rebel Mechanoids heard the first few shots above them.
By the time they were able to react to search for their enemy sniper, Tellie had already leapt to the next tree branch to reposition herself again for the upcoming fight regardless of the fate of the snipers that she had targeted previously. This confusion allowed the ground defenders to take advantage of it and slaughter a few more rebel Mechanoids.
It wasn't until Yinn gave the Grey Bears an affirmation that the enemy snipers had been taken down that Tellie was able to have a look of relief on her face. Yet, she did not allow herself to celebrate as the Tactical System Buffs were still active and she intended to use all of them to the best of her abilities.