Some items can still target Dark Willow during Shadow Realm. These items have one thing in common: They can be cast on allies without interrupting the caster at all.

These items are:
1. Healing Salve
2. Clarity
3. Enchanted Mango
4. Bottle
5. Shadow Amulet
6. Glimmer Cape

They should not be able to target her. No other item can target her (including similar ones like Tangoes and wards).