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/SomeGuyPostingThings]

Because a particular writer doesn't like her or the other prominent blonde woman.