Well you will probably be fine...but the more effort you put into it, the better the results will be!

Are you putting it in your backyard or in the bush? If it's going to be in the forest, make sure you at the very least fence off the area from unwanted pests.

You will want to transplant into a much bigger pot than a 2L one though.

Get her setup right first, then mother nature will keep her happy. So:

#1: Put her in a big pot..biggest one you can get your hands on and fill it up with a reasonable potting mix with lots of vermiculite to aerate the soil. Seeing as you are going to be leaving her, i guess a slow release fert would be ok to use. Generally slow release ferts are hard to control, but in this case, you don't really have much of a choice.

#2: Fence off the area somehow or find a good spot where you don't think pests will get in.

#3: Keep your fingers crossed all goes to plan with the weather