Hello all:
I have been divorced for 1 year now, and struggling to make the right decisions with my son’s mother. 6 months ago she left the country, “needing to clear her head.” She came back two weeks ago and seems to have not changed at all. She has had plenty of time to get things in order, yet she still has not made any plans to be here for our child. She plans to leave again soon. I have talked and talked and talked to the point where I’m repeating myself and it’s becoming very frustrating. I have done as much in my power to convince her that leaving again will put a strain on the relationship she has with our son. I totally understand that people need time to cope with situations like these, but when children are involved how much time does one need? How should I handle this situation or should I just look forward to doing this alone.

there is no easy answer to your question of course.
You'll find people in similar situations though on this site you can talk to.

Houston, welcome to the forum. Tell you what, sometimes certain people just don't seem to be able to settle in and be a parent. And when that is happening there isn't necessarily anything that can be done, we just can't change or control other people....they have to do it for themselves. My advice, is use your energy on your son and being there for him....for the time at least it sounds like you will be continuing to do this without her help, but that is not an impossible task.
BTW, I'm right here in Fairfield

I raised 2 teen boys without help from their mom who was 2 miles down the road, and they are just fine (the 2 in uniform) so let her go, it's her loss.