Hospital visitors

I’m due with my first in October. A friend of mine and my partner’s has decided that she wants to come to the hospital for the birth. She has told us both that we must tell her when we’re going to the hospital so she can come along too!!!! We have both told her that we are planning on it just being us two and the medical team and that we will give the okay for visitors when we are ready but she is sticking to her plan and keeps bringing it up. Obviously we are not going to tell her when we go to the hospital and I will talk to the midwife at my next appointment about it too. Has anyone else had this situation? How did you manage it? It’s causing me a bit of worry which I was hoping to avoid.