Separation of powers

Tina got home from her adults-only trip to Bavaria on Tuesday afternoon.  On Thursday, she left again -- this time to the States for four weeks (mostly with her parents in Las Vegas).  Calvin and Sara went with her but Oscar stayed in Germany with me (he still has two more weeks of school).  We looked at getting tickets after Oscar was out of school but leaving a few weeks later would have cost a lot more money.  So Oscar and I are by ourselves in Germany until the evening of July 6th.