In a Minion game, any virtual coin at all is MUCH better than Silver, and possibly even than Gold. Treasures will be discarded, whereas virtual coin can be played before discarding your hand with Minion.
In this game, you should have opened Minion/Squire (instead of Minion/nothing) and focused your strategy on Minion, Fishing Village, and Squire. The idea is to use Fishing Village and Squire to give virtual coin and more actions, as well as using Squire for the +Buy.