Try not to personify your fish too much. I know we like to think they have these complex personalities, but goldfish aren't really social. She's not going to get lonely or bored being the only fish in the tank. Hopefully she's slowing down right now due to healing. You've got your test kit and have been working hard on keeping the ammonia down so her body is taking a chance to heal a bit. You might see black spots along her fins and scales soon too. On the other hand, the excessive attention you've been giving the tank might be making her more stressed. But we'll hope its healing.