from memory babies around yr age should have 14 hours of sleep minimum.
This is my website for baby resources, see if you wish to read more:
How much sleep does your child need? | BabyCenter
Your girls seems to have very short naps. My boy when he was at the same age sleeps at around 10plus at night, wakes up at 7plus. Naps for 2 hr at 10plus. Naps for 2hr at 3plus. So total 1 late morning nap and 1 afternoon nap.
you may want to consider cultivating a sleep schedule for your dear daughter becoz if she can take longer naps you will have more time for yourself. Sometimes they are sleepy but becoz some babies at this age wakes up after light sleep, then do not know how to go back to sleep on their own. Of course you need to tie back with your feeding times too.
One way is when she is awake after 15mins of sleep you can put her back to sleep again by patting her, letting her know its still ok to sleep, etc. Or yr own way of putting her to sleep. After that she will be accustomed to the 'pattern' and will learn to put herself to sleep longer.
oh dear, did not realised i m so long winded. hope this is useful.