Advance Parole

Hello guys! I wanted to see if anyone can answer my question. So, I recently got approved on April 13th and the traveling dates they gave me are from 4/20 - 7/15. Im planning to travel around June. Im planning to leave from LAX. My trip was destined to Mexico only since I have a very sick grandfather, however, one of my aunts is also very sick but she lives in Colombia (she married a Colombian man) she really wants to see me but obviously due to her condition she cannot travel (she is also my God mother so it's important for both of us). She was planning to travel to mexico if my AP was approved but now I dont know what to do. If I go, I was planning on getting a letter from her doctor or hospital stating her condition so if I get asked my reason for traveling to Colombia, I can utilize that as proof. Im only planning on going for the weekend there, and from there I can go to Mexico. In mexico I will be staying for about 6 days because on my way back I have school and work. Does anyone have any experience traveling to another country? and also is it a good idea to travel from LAX to Colombia? or should I go to Mexico first?
Thanks for taking the time to read my post!