Before awakening came out, people talked about how Betty's Gold GET would be very useful in earning gold. I am pretty much broke now from all the events and rushing to upgrade my units as high and as fast as I could. I last ditched most of my gold into awakening Betty and upgrading her levels.

I can't seem to figure out how to actually make use of it. I tried taking her to missions where she can solo kill everything on her own (where you funnel all enemies into one lane) and the gold she earns is actually much less than what I'd get running Base Scramble II on auto pilot with just selling everything. She doesn't seem like a unit who can handle higher maps on her own and get many kills out of it.

¯\_(ツ)_/¯