Having some one do it for you would involve sharing the design, which is against the rules and regulations of almost any site and thus is illegal. What you could do is download Truesizer (or another free programme) and try resizing it yourself. It might turn out less than perfect when downsizing as much as you want to - details might give problems and there might appear gaps as overlaps to avoid those are downsized as well and become too narrow to compensate pull. Make sure you set it to keep density constant (as opposed to keeping the stitch count the same).
In future please place questions not concerning this site in the community section. Not only does it keep things organised, but you are more likely to get answers there.
Asking the original digitizer to help with the size is also a possibility.