She has come back before because you wanted her to. She has to come back because SHE wants to. Otherwise, it will only be a matter of time before she moves out again.
Yeah, I just thought I could show that it is worth coming back. But yes, you are right. Let's see how the next weeks go, she will probably come here a few times to pick up stuff and I'll try to be busy doing other things (not easy in COVID times though).