Quick update from my dad:

My mom is healing from her lung surgery and the pain from that is minimal.  But now an unrelated issue has started in her hip and the pain is awful.  It's the hip she had surgery on in the past, and it turns out that during her lung surgery, they had her laying on that side, so the new hip pain may be related to that .  She's had an appointment with her orthopedic surgeon and is scheduled for an MRI on Saturday to try to figure out what is going on.