No More Nap Time?

A couple days ago I went to put our one year old down for her nap and was very surprised when she just cried and cried. I figured maybe since my husband was at home that day it just upset her routine and I let her get up and have some time with her daddy. The following day we woke up late and my husband was home so I let her skip her nap and then yesterday we were out all day so she missed her nap again. I thought that today she's probably be VERY tired and want to nap longer than usual. However, I was wrong. Not only did she cry (she finally fell asleep after 30 minutes) but she slept only about an hour. I am having a hard time believing that she might be ready to stop her daily afternoon nap. She is only a year and a half old so I would think she'd have at least a year before she would not need to nap every day any more. Maybe I am jumping the gun. I will have to see how she does over the next several days. I may allow her to stay up a little later and wake her up earlier to encourage her to continue her napping because I know she really needs the rest. My baby is growing up too fast!