Soraka not healing herself out of range

I consider this as a bug or "undocumented feature". With the new Soraka, if I cast Q and immediately run back in the opposite way, I get the heal animation, but no heal at all. It seems to be an out of range issue. Mean while, I would have to have large cojones to sit there next to the enemy carry waiting for the cool down. What ever it is, please clear this up if there is a range limit. I'm guessing 2500.

Let me clarify if I can. Heal and Q both work when I'm near the enemy champ. If I'm at the edge of the casting range for Q and get farther away when the star hits the enemy, it will damage, but not heal me.