(I am going to put it bluntly.
Your. Character. Can. Not. Hold. Vos. Back.
Your character is strong, I get that, but people have to be able to control their own characters. Vos is a demon king, and isn't really bound by mortal laws. It doesn't make sense for her to be able to restrain him just by grabbing his arm, or that she would fealibly be able to physically move him.)
( I didn't know he was a demon king
so we fixed it,
she just stood in the way.
If you didn't see that.)