There's the makings of a decent-ish story here; the dynamic the two leads have is somewhat enjoyable, seeing her decide to step up and saying her mind once finally reminded someone cares about her was great, and I found myself rather interested in their time as childhood friends.
Unfortunately the fact that literally any sort of important conflict can be distilled down to "simply do not go near the drunken asshole and maybe like speak up for once" is pretty bad. There isn't really much to get invested in here, not to mention that the time travel aspect is rather wasted. With their dynamic having Grey as a loyal dog utterly in love with Ellen, it's a bit of a waste that he seems completely oblivious to the time travel.
It also may just be the villainess lover in me speaking, but I was disappointed she didn't actually use the matter of the vase to force her family's wrongdoings to light or just put them in her debt.
Really I just think this one's too safe; there's not really much substance here. It's fine, especially compared to some of the other works in this anthology, but it's just that. Mid.