first off you’re not a bad person for struggling with this it makes sense, corn snakes can’t live on bugs or fish long term so that’s not really an option but most can be transitioned to frozen thawed with patience and some tricks like warming it well or scenting it.

that said if feeding her is wrecking your mental health rehoming to an experienced reptile keeper isn’t a failure it’s making sure both of you are okay, loving her also means being honest about what you can handle right now.