Thank you for asking and answering this question! I hated to get hung up on playing Em but I was taught years ago to use fingers 2&3. I'm picking up the guitar again and LOVE Lisa's lessons. Her method of using fingers 1&2 was different but it totally makes sense.

I guess it all boils down to what feels the best?

Em to Am seems easier using 2&3 but Em to G will be easier using 1&2.

I plan to get comfortable with both options but want to always follow Lisa's methodology.

Thanks Guitar Tricks!