Update

Indy is rolling over.
For the last week I've found her laying on her stomach but Kinsey was never far away so I had no proof that Indy was actually doing it.  When I'd watch her, she'd usually just stop and lay on her side, like this is good enough and I don't have to figure out how to get my arm out of the way.  This morning I watched her do it 3 times within a few minutes, so yeah, she can roll over both ways now. 
Development milestone accomplished!