If you have 9, you can invite someone to move in.
The only thing is that I believe it will take an extra few days for Baabara to move in. Don't quote me on this, but I remember some people posting about being in the same situation as you and freaking out that they didn't see a plot the following day. If you want to do the reset trick, I'd still suggest doing it tomorrow in case she does move in tomorrow, but don't be alarmed if there's no plot. If you plan on time traveling, you can't just skip ahead two days either. You have to go one day ahead, save, then continue moving forward.
Again, I might be wrong on the last point since I don't have any experience with it. I've only heard of other peoples' stories.