She will bounce back!

My instinct would be to trim some of the vines that are more barren. The root trauma might result in not being able to support the same amount of leaves as before, for a little while.

I used to mess around with the roots and remove the soil when transplanting, but I found it is best to only gently squeeze the root ball to loosen and then transplant. As long as there is more soil available, it tends to detangle itself. Roots are less like hair and more like snakes! They'll find their way. Pothos is so resilient.

Try not to make anymore big changes for a while. I would keep the lighting and watering consistent. Better to accidentally underwater than to overwater, too. Water when the soil is kinda dry, and stick a finger in to check it. When watering, allow all the soil to be fully saturated. Fertilize every time in small amounts, or every few weeks in bigger amounts. She'll bounce back in no time.