Going Overseas- Leaving Toddler Behind

Hi there,


I am a 23 yr old woman living in Southern California and I'm traveling to Brazil in 10 days to see my fiance and attempt to start a life there.
My mother-in-law has asked my family( in Southern California also)to take care of my 3 yr old daughter until I am stable in Brazil and can send for her.She is in school and extra curriculars so this is the best option.
I have already told her that I will be going away for awhile and she is quite sad.
My question is how should we deal with this the day I leave. Is it wise to take my daughter to the airport and let her watch me walk on the plane? (knowing her, she will likely try to run after me)
Or should I tell her that I'm leaving and take her to school to play, while explaining to her that I won't be home when she gets home. I am trying to reinforce the positives about my going away ( new house, new school) yet, I am concerned about how she will deal.