First interview/red flags?

So I graduated with my ADN last month and have been applying with no luck in the urban area I live now. Then my husband got a potential job offer about an hour away from us so we are contemplating a move. In preparation, I applied to a few places in the new area and got a call back today for an interview.

I think I might be overly suspicious just because the job market for new grads is so tough here, but I'm worried about this place. The HR lady I talked to on the phone seemed in a huge rush, asked me maybe one question, then asked me to come in for the interview tomorrow and immediately got off the phone. Luckily I heard what company she said when she first introduced herself because she didn't repeat it. It's a nursing home position and I Googled the place and it gets mixed reviews online. So my question is, when I go for the interview tomorrow, what things should I watch for in terms of red flags? I've had bad nursing home experiences in the past and I don't want to get into another one. Am I being overly worried? I feel prepared for the interview in terms of selling myself but I also want to be sure it's the kind of place I want to work. I hope I don't come across as cocky, I just don't want to be naive and make a mistake. Suggestions are welcome.