Do you know the size of the pot in gallons/liters? It looks like a 3gal planter? Before she gets too big id suggest transplanting her to a 5gal bucket or planter fill the medium 1/4 to 1/2 full with soil. Place plant on top of soil and bury the rest of the plant covering about 1 to 2 inches of the main stem and leaving about 1" from top of soil, to rim of planter.

Here's a lil diagram:

Attachment 284192

Hope this helps..