Sure. I can fly invisibly as long as I have my visible illusions following me at a considerable distance passing through the ground. If I ought to do this by default rather than just when particularly worried I'd like to know. I can do the spell without you having to borrow Macalaurë or line up a shot from inside a building, if you like.
"I'd apologize but it's not like I made you build one." She de-baffles and concatenates the accelerated perception spell, then produces a swift-in-a-hurry target.
"Even shots against nothing in the sky? You're not going to cripple a deer or something if you're off."
"Is twenty a random number or does it just strike you as a right inflection point between 'probably won't hit me' and 'less conspicuous than a flock of a thousand'?"
"Okay. Thanks for the tests and numerical recommendation."
Twenty blobs zoom away.
Then she can land somewhere and supervise and take note of how good everybody is for a couple minutes, and if nobody breaks off to say hi in that time she can concatenate her accelerator and work. Fast.
She puts away her spell and symbols. I wasn't expecting to come back either but I found an exciting magical cheat! Which your cousins are already taking advantage of, so I thought I'd come offer it to you too.