Did you order anything else besides the kGo kit & juice? I only ask because the kGo only comes with 5 pre-filled cartridges, meaning she'll be able to start immediately. As soon as she notices a burnt taste or lack of vapor, you will have to refill the cartidges. They usually take about 10-15 drops, which you'll place on the filler at the bottom of each cartridge until it looks "slushy". Just ensure that you fill it just until it doesn't absorb more juice, otherwise it could leak out the bottom of the atomizer. Not the end of the world but it will negatively affect her experience.
Actually I don't believe the KGO comes with any filled cartridges.. It says on the site:
Package contents:
2 batteries 1100mAh NOW WITH 5 CLICK BUTTON PROTECTION!
1 atomizer
6 empty cartridges
1 USB charger (420mAh charge rate)
1 USB wall adaptor
1 Bigbore cone (Which I don't get because I got the pink one, only one available)
1 instruction booklet
This is everything else I ordered with it...
1 HEC001-PINK | KGO kit 1100mAh by SLB - $42.00
KGO Color Options: Pink (Not BigBore)
1 HEC039-50MT18 | Dekang E-Liquids 18mg - $11.00
Dekang E-Juice 18mg: Menthol 18mg 50ml
4 CE-2 rubber tip for cartomizers - $0.60 $2.40
1 | HEC004 | 2.0 ohm low resistance 510 - $7.00
cartomizer.(single coil) 5 pack
18 | HEC018-510PFM | KGO atomizers and cartridges - $0.20 $3.60
Pre-Filled(Menthol) 510 cartridge 18mg
1 | HEC016-BKDRIP | Plastic Drip Tip - $1.25
Total: $63.89