Support Google family library

I would like it to support Google family library in the same way it supports Apple family sharing. I have recently purchased it on my account even though my wife owns a galaxy watch, thinking she will be able to use it as a family member, and I myself plan to potentially buy a smart watch later on. The reason I bought on my account is because I'm on android and she owns an iphone which she is about to change for an android device in a couple of months. This is why I didn't want to buy an ios version (knowing she will not have use for it soon). I didn't find Watchmaker in my family library to be available for download to my family members.