Close to the lab door to outside:

A small patrol squadron of laboratory guards stands outside in the cold and snow. The one in front is obviously the leader of the group. He Is burly and tall with top-quality armor, stun weapons, and he even carries an actual rifle strapped to his back. He lifts his hand and presses a button on the side of his face-concealing helmet.

"I'm outside. Awaiting orders." He says calmly.

"Yes, yes. Do you even have a visual on the missing subjects?" A cranky-sounding woman's voice answers him through the speaker located on the inside of the helmet.

"No, I don't Ma'am. I just got outside."

"Well then go look!" The cranky woman yells through the mic, making the young man wince.

"I-" He stops when he hears the click of the older woman shutting off her microphone.

He turns to his team, "Alright, we have orders to catch any run-away freaks. It's dark so we go infrared, slowly, and quietly." Her turns his visor to infrared mode, letting him see the heat signatures of anything nearby. Seeing nothing so far he motions for his team to follow him as he starts through the deep snow.

(This is going to end in lots of casualties...)

(make sure you don't kill the leader though. He will be important later.)

(No, just grievous injury.)
Mirage
Mirage sensed something. Maybe a smell, or a sound, but it put Mirage on edge. She grabbed the knife and tranq gun, and headed out toward the men. She was getting snowballs ready as she went, intending to blind them with the snow.

(I do need to talk to you about something though. Remember when Mirage dodged a literal bullet for like five feet away? Well consider this:

The average bullet travels at 2,500 feet per second (around 1,700 mph). If you reacted to the sound of the gun going off and required 0.20 seconds (twice that of the fastest Olympic sprinters) to react, then you would need to be AT LEAST 500 feet away to successfully dodge a bullet.

You CAN NOT dodge a well-aimed bullet from close range. It is IMPOSSIBLE. Slow your roll okay?)

(This isn't the real world, and Mirage was trained to dodge bullets based upon the sound of the gun's internals. She has also been engineered to be faster. But she can't dodge melee if she doesn't see it coming.)

(I get that it isn't real, but I modeled this world with the real world as a blueprint. Everything is the same except this mountain and these experiments exist. Bullets are simply too fast to dodge close-range, engineered to be faster or not. I will give in and accept that your character is very good at medium range dodging and is able to sometimes dodge very close bullets, like, a 50-50 chance. Is that good enough?

I'm not trying to cripple your character or ruin your fun. To me, it just seems that your character is going so fast that she is teleporting and that is too fast for this make-believe world. Hopefully, we can come to a compromise with this.)

"Wait, hang on. What's happening?!" Boreal's vision was fading. She could barely see Dream in front of her, "I can't see! Dream!" And then silence. She can only see black.

...

Boreal rolls over, tossing in her sleep. She then promptly wakes up, wrenching herself in a sitting position, as if waking from a nightmare. She looks around. She sees Dream sleeping on the ground in the cave, and Elise sleeping near... one of those glowing red creatures. She shys away from the flickering beast. Boreal also sees Mirage walking through the woods. She nudges Dream to try and wake her up before trotting off towards Mirage, trying to see what she is doing. She calls out to Mirage, "What's going on? Where are you going?"

(I think that will work. Also, the displaced air of rifle rounds will alert her of snipers.)

(alright thank you for understanding ^^)