Unless you want to have to keep rolling your baby over in the middle of the night, or laying her down when she stands up, do not help your baby. You can show her the first few times so that she knows what she needs to do, but don't make a habit out of it, as she will quickly rely on you. Odds are, when you roll her back or lay her down, she will quickly pop right back up anyways. She will figure it out, and she will want to figure it out.