it is possible but really difficult to fit in a pogo instant silkspear on phase change scream, to my understanding you need a frame perfect neutral pogo where u lose height and then silkspear inside gms so the hitbox barely hits her
this is a fast combo ive been using on gms when she staggers where u can do a pogo dash turn around slash pogo instant spear. another thing is that you can land a silkspear on her before she lands from the stagger which doesnt add to the unstagger counter although its not very viable unless you KNOW she will stagger
i recommend always standing on the left side of gms when u start the fight, its faster obviously but mainly it will force her to go right at LEAST once and if ur lucky she'll go right again so u can get a silkspear wallbonk in. start the fight anywhere to the left of the silk on the ground for this. u can also spam upslash when the fight starts to fit 1 nail hit in easy
when gms slashes, u can also use the pogo instant silkspear into a clawline to catch up to her. make sure u do this technique in the middle of the arena so the silkspear hits her before she goes too far away
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