Wifes father passing, how to deal with travel and kids

My wife is from Brazil, and we have been married for 3 years. We have a 2 year old son. Her father has had a bad from of cancer for about the past year. During this time, she went twice to visit him, once for 4 weeks, and once for 3 weeks. Both times she took our son. About 2 weeks ago she received a call from her mom that the end is near, hurry up and say goodbye etc. Let me say I hate my wife leaving, especially with my son, but I agreed she can go for 2 weeks. We both agreed longer than 2 weeks is too long as this issue came up before. So, a few days ago she told me he is slipping into a coma, not much she can do, she will be back Friday as planned. She said she made her peace and she sounded eager to see me on the phone. Then 2 days ago, when I ask when her flight arrives, she told me 7 am, then she said "well I am staying 8 more days". I was upset, as she did not really ask or discuss with me, just told me she is staying longer. But, she said regardless she will return for sure the next friday. So, the next day rolls around, and she said she asked the doctor, and he said he might live a few more weeks, in a coma..So NOW she is staying for that period of time, PLUS one more week after the funeral for some ceremony. What would you do in my position? I feel she broke our agreement, and I cannot even trust she will return on this new timetable.. I am missing my son more and more everyday. Now it might be who knows how long? our 2 week agreement went to 3 weeks, now maybe 3 months? I do not know what to do.

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