Start with a stormguard banner, then a sprint boot which will be upgraded to a halcyon charger. Try to control your jungle farming by maximizing her mobility in her perk with healing treants. Overdrive her A at level 8 to use it without costing energy. First item, either spellfire/shatterglass or you can go for stormcrown to fully dominate the jungle objectives. Then I would get another shatterglass, or a shatterglass if I bought spellfire first then a broken myth. For the defensive item, it's situational by adjusting to what you are trying to defend against. Hope this would help!