Animations breaking with Character Proportions

Hello, developers! Currently working on programming some animations, however, I’ve noticed that with my character being a smaller scale than the rig used in the initial animation has caused the pen to go in a different position.

Looking for solutions to where I can fix this, I do have retargeting on, turned it on and off and do not see any changes whatsoever with both options, not familiar entirely with tool animations, so not sure how to fully go on about this.

Was looking into IKConstraints, but I don’t believe that really with fix the issue. If anyone has a solution, that’d be greatly appreciated, thank you in advance!