Just remember, she is having a rough time as it is, her dad's surgeries will only add to it. It's important not to take her moods/irritability/however she shows her stress personally and to be there to support her when she lets you.
Her mood swings are normal for a WAS, focus on the good times and ignore the bads. If that means boundary setting and not talking to or seeing her if she is lashing out at you, then do it.
Michelle - Proud DR Rockette S: 28JUL07, D'd: 29OCT09 http://tinyurl.com/27j9qo2