21 Month Old Sleeping

Just wondering if she’s getting enough sleep. For months she would fall asleep around 9-9:30 (yes I know this is considered late but she absolutely would not go earlier) and sleep till 9 am. This week I put her in her crib around 8:30 and she’s awake talking to herself until 10 and then she’s up around 7 am. So barely getting 9 hours. She usually has 1 nap a day for 1-2 hours around 1 pm. She doesn’t seem cranky. What am I doing wrong or is this ok?