Get the HELL up. Sasha's moving into the stands, where the spectators are, towards the upper edge of the arena. It's time to do several things at once.
The familiars, the archers, the power; it's all madness. But like war, grandfather said, there's always a method to the madness, or someone there to get something out of it at the expense of poor boys sent to die for what they didn't even know or care about. All that time thinking about her new friends, about Mina, about the glass angel and the blood and the terror—all of it made clear that Witches were just a thing. A twisted, wretched elemental of hate and selfishness that couldn't be anything else. Yet there was still a method. A button that could be pressed. And if attacking her directly isn't so wise just now...
<YOU CALL THIS 'FAIR'?!> Sasha telepathically yells directly at the Witch, glaring at the gray armor in the middle of the field for a moment. <I thought Knights were 'honorable'! A challenge to one is challenge to all, or your 'glory' is worthless! What kind of Knight needs her minders to do her job? I see you for what you are, cowardly shadow!>
Immediately following that taunt, Sasha bolts up through the stands as fast as she can, zigzagging and hopping to present a more unpredictable target for any more arrows. She's going to try and reach a midway point between the ring of snipers and the arena, moving among the stands and the people. If this somehow fails, and I wind up attacked by melee familiars, hit them with Manabolts at at least Moderate cost. Use Teleport to escape their reach if necessary.
Sasha remembers what it felt like to run her magic reverently over her grandfather's old gun, almost apologizing when she made any modification—but she knows he wouldn't blame her for going a little further if it meant saving lives. Her friends' lives. First, she needs to find out what it takes to kill these things. Shoot the first familiar that's messing with the people in the stands she meets with a Manabolt, at as good a power as I can get it without causing area damage to any nearby civilians. If that fails to cripple or kill it, keep hitting it until it works.
If mobility works this time and she gets to do her running, Sasha goes into a strafing run along the stands towards Alida's position (she's closer to her than Tooru if the witch was staring opposite of Sasha), shooting the bow-armed familiars with more Manabolts at as much power as will deal the heavy damage needed to do serious harm. If possible, aim specifically to destroy their bows or the arms they're holding them with; a disabled sniper is as useless as a dead one, and it's more economical. Sasha's goal here is to cripple or destroy as many sniper familiars as she can this turn. We NEED these guys off our backs. Avoid melee familiars entirely during this run. Teleport if it becomes necessary to avoid interception.
(I thought about using Telekinesis to rip the glaives from these guys' hands, but they look strong enough to ignore the strength of 'one adult hand's worth of force.)
(Also, Sasha's kind of wanting to see if the combat and gunshots from her rifle will shock any of these people further from the stupor they're in.)