Tbh she deserves more than Subaru. I feel like his love towards Emilia become more of a toxic obsession which was made pretty apparent in my view. At least he decided to stay loyal to Emilia and knows where he stands on that issue.
And it's sad because I can see why Rem has fallen for Subaru. I just wish someone would steal her heart away because she's just well intentioned and truly cares. It's rare to see that in the real world so really feels for her like I said.