Wrinkle Under Nose
It is difficult to tell without a photo which type of wrinkle you are referring to. It sounds like a wrinkle from aging/sun damage but if you post a photo it would be easier to answer. These type of wrinkles are best minimized through Fraxel and facial fillers such as Restylane.
Wrinkle under the nose
If by line you mean the transverse line, this can be corrected by filler injection, laser, or a combination of both. It is unlikely cause by botox or filler though.
Wrinkle above lip
I notice that some women develop a line under the nose above their lip as they smile. This is unlikely related to filler from a year ago. Botox may help.