Sorry, but this sounds like incredibly dumb advice.
It's not a wrestling match, for God's sake, it's a dance.
Leads are invitational, not commanding. If a follower refuses your invitation, then she refuses; and she may have good reasons for doing so (e.g. injury), so a good lead should respect that decision and work within the constraints of what the follower accepts.
In this case, If a follower clearly wants to raise her hand up high, then I'd work around it - for example, either by switching to moves that work in that position, or by leaving that hand alone and using other leads. I certainly wouldn't force her hand to a place she's not comfortable with.
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