"I-I wasn't trying to!! I-I didn't I just-got upset-"
So for reference-Sirian is the one who stole Tara when she was born-the Dark elves all have destructive magic, so the only powers Tara's ever developed are destructive-but since she's a light side, she's meant to be more energetic/capable of creation-she can't really do a lot of destruction nor can she control it.