WOW - she's doing 9-10 hours straight - that's awesome for that age bracket i reckon!
All babies are different & there is sooo much that everyone will tell you that they 'should' be doing, just listen to your baby. Your baby is ONLY 7 months old... still so young. If it isnt a problem to you to be getting up at 4 or 5 to do a feed, then dont worry about it. Some people just shouldnt open their mouths.
With my first, he was about 10 months old before he even slept a 6 hour stretch & i thought that was bliss! Heaps of people were telling me what to do & how to fix him, but nothing worked... he eventualy worked it out himself - when HE was ready. Then the sleeps gradually got longer & longer.
with my 2nd, she started sleeping 10-12 hours from 6 weeks old... blessed i know, but i did the hard yards with the first one. She has only ever slept between 10-12 hours & she is 5 now. On weekends/school holidays she will still have a day nap as well!