I assume because it has the “oo” sound. “Loser” looks like it rhymes with “hoser”.

Essentially yes. I think it’s usually, “out of the frying pan, into the fire.”

::: spoiler Just south of the druid grove there’s a hill you can climb up that has an amulet that gives Guidance. If that’s your only reason for including Shadowheart, that might be a good alternative. :::

If you are going to keep Shadowheart, I’d recommend respeccing her to switch subclasses (I’m a fan of Tempest cleric, but there are several good options) and fixing her stats (like choosing either STR or DEX rather than splitting both).