Advice on an efficient file transfer workflow that allows for adjusting the final files.

I occasionally edit for other photographers. Weddings - so lots of files.  My previous workflow was to get a catalog and smart previews from the client, make the LR Classic edits and then send the catalog back.  Well. I gifted myself with an iPad Pro so I can edit on the road... not knowing I just mucked up my whole workflow.  I have the using the LR CC and the cloud for my personal editing figured out. Where I run into trouble is how to receive raw files from clients, edit them in LR CC and then get them back to the client in a format where they can see the edits and adjust them if needed.  I hope this makes sense.

Help me... I've spent 4 hours today bouncing back and forth with 5 different LR Specialists on the help line and got no-where. I'm going to be nice and just say that I knew more about LR than they did. The whole process has me in tears, it just can't be so complicated!