I can only suggest you read the book that helped me a ton!! "Good Night, Sleep Tight" by Kim West. Naps should be 1.5-2hrs long....anywhere up to 6 months they will nap up to 3 times a day for a total of 5 hours. At 9 months I would think 2 naps is normal, however, she should be napping for 1.5-2 hrs at a time....you can also look at the message board for Kim West at
www.sleeplady.com for advice....GOOD LUCK!!!