First off, Ella is doing just fine, despite the fact that she had surgery last month, the second time this year. Like many wheaten terriers, Ella is prone to developing big sebaceous cysts, which for the most part we have left alone. They're mostly only a problem if they start to grow. In that case they can cause intense discomfort, or they can even burst and get infected.
Normally we've handled Ella's cysts by having them drained with a needle when they get too big, but in February we finally had to send her under the knife for the first time to have four of them removed. One had burst, another was getting bigger, and we figured we would just take as many off as possible as long as she was under anesthesia anyway.
This is considered minor surgery, but it's still nerve-wracking, especially because of the anesthesia. But Ella came through the first surgery fine, which made us a little less wary about doing it again last month.