Was going to add to the previous posts but anything I could say has been said, Eliza is way to good as a LI/character so being forced apart again just isn't fun. Taron Baby Dick being a reason Eliza would need to stay is just one of the many, many, maaaany reasons he has outstayed his welcome and needs to go.
Edit: Adding to this post so I'm not spamming constant new thoughts.
I have been overthinking things. I now wonder if there could be danger to Eliza from the weird ass cult that her possible mother is being held by, they have magic users it seems and she may be lured by her mother being held there. Taron Baby Dick is absolutely pathetic enough to use a cheap trick like threatening her mother and having people stronger than him ready to kidnap Eliza again, he did say he wasn't interested anymore but I'm seeing this as being the cult telling him to do it for whatever reason.
This could be brought on by something that MC does while away causing the cult whoever they are to go after Eliza a ways into MC's journey. As I say, I have been overthinking, It's a curse. Also keep that les/bi shit away from Eliza, not needed.