Ohh I see. We all have one side that is more tightly related to the "big tree" so like the connection finder takes the shorter possible way, you'll usually see the same beginning path.
If you want to avoid that, just see your connection to any other profile and click the little x cross on your mom's square. This forces the finder to find a path that doesn't go through her. It might not be able to find one if your dad's side is only connected to the global tree through her.
If you want to shorten your paths on your dad's side, you'll have to work to add more profiles and connections on this side!