I agree that you need to try and extend the A time btw Nap 1 and 2. She is a clever cookie, that she catches up on her sleep at night, going to bed earlier.
Henry's schedule was very much like this at 7 months:
7:00 Wake up and reflux meds
7:30 Milk
8:30 ish breakfast
9:30 Sleep
11:00 Wake and Milk
12:30 Lunch
13:45 Nap
15:45 Wake
16:00 Milk
17:30 Dinner
18:20 Bath and bedtime routine
18:40 Bottle and bed
Obviously it is easier writing in 5 or 10 minute increments, but sometimes he tolerated slightly longer A times and other times he needed to get to bed earlier. He sometimes slept 2 x 2 hour naps, but mostly his morning nap is 1.5 and pm nap 2 hours long.
He is still on a similar routine, but he wakes a bit earlier and then lies in his cot and chats away and plays with his lovey.
Good luck and let us know how things go!
DI