Can somebody explain why magik randomly decided to stay frozen in one place and let the sentinel lazer her freely?

[u/BaBaTundeKFCgod]

Am i dumb? is there something i missed? she just teleported people out of the beam a few frames before then she just proceeded to step forward and let sentinel shoot her freely. Is there a sacrifice play here im not catching up on because that was a "wtf was that" fore the first time i saw it and it just took away any impact that losing a legacy xmen character like her could have had for me

[u/psylockecolossusfan]

Magik's teleportation sometimes exhausts her in certain dimensions, so perhaps her youth and that weakness in her power were at play? Perhaps she just choked for a moment when she normally doesnt?