Everyone is different! My first was born an hour before her due date. I went into labor on my own. It took 12 hours of labor before I was even dilated to a 3 with her. I was in full blown labor for a total of 24 hours and 2 minutes! With the second one I thought I would be early. I was a week overdue before they induced me. I was having contractions off and on for 3 weeks. By the time they induced me, I was dilated to a 4 and 90% effaced. I was having mild contractions, but just wouldn't seem to go into full blown labor. I had a 10 lb 7 oz baby 8 hours later. (and I wanted them to wait one more week before induction! Good thing I didn't!)
I know you already have one child and it becomes stressful trying to figure out who, what, when, where, when it comes to labor and having someone take care of your daughter. My best friend took my daughter for me and when I would stress out about what if it was 2 am, she would just say to me "So what? What's one night of bad sleep? I'll get over it. I want to do this for you so let it go. When it happens, I'm here." So, my point is just make plans for who will be taking care of your daughter and just know that your family and friends are happy to do it for you, no matter what your next birth story becomes.
Happy, Healthy Birthing to you!