HI, I am having the exact same problem. I was finally able to get my phone to show up on my daughter's by following your steps ( I will probably deactivate), however I still cannot get her phone to display on mine, which is my obvious goal. The advanced/Share Locations settings on her phone are greyed out and I'm unable to select them. All other iCloud, location, find my phone settings are activated. I am still using my iTunes account on her phone, as I want control over any type of purchase she tries to make, however I had to make her her own iCloud account to get Findmy phone to recognize her phone. I don't know if this matters?? Sorry for the long explanation, but basically, my phone recognizes hers via Find my phone, but it tells me she is "online and not sharing location" Can't figure out how to resolve this. Suggestions?
Thanks