not bad at all! I got her on the last pack as well from my 12 pack opening...Ive done 3 of them now for 3 different events and gotten the character on the last pack twice and once I didn't get the character at all. Makes me wonder if they order the packs in some way for the opening when doing batches!
Ive never gotten an epic or legendary from a pack so that is great luck to get 2 in one set of 12. Good luck getting the event instruments.