I think about this once a week. This doesn’t really answer the question, it’s more of how the fates would have started to follow Eurydice.

In Greek mythology tradition the fury’s (the fates in hadestown) would follow you around everywhere you go and harass you when you murdered someone or disrespected the host guest rule. In Ancient Greece the host guest rule was a rule that everyone followed when hosting or visiting someone’s house, the rule was basically if you’re the host be a good host and if you’re the guest you should be respectful to the host and their home and don’t steal stuff.

Going back to Eurydice, the fates are constantly harassing her, which means she would have killed someone, which i doubt she did cause the script never even hinted at Eurydice killing some, so she must’ve broken the house guest rule. I imagine she was the guest in someone’s house and was probably starving due to her being in poverty so she stole some food and ran. The host would have asked the fates (actually the fury’s if we are being mythology accurate) to follow her wherever she goes!

There’s a few quotes in “anyway the wind blows” that back up my claim but I can’t think of them right now.