Whats this on? If it costs less than 100$ to replace its probably not worth repairing. Unless you're just practicing. That kinda specialized labor is expensive but I would have loved to see a boot up test at the end. But regardless great creativity with the repair.
You can gaurentee the integrity of any of the other traces that pass through there, as you do not know what is on the lower layers of that board. Without either Xraying, or having the gerber file, it won’t be possible to confirm
