I think the early loong morning nap might be your issue - especially if it is sometimes going on longer than 2 hrs. She is treating this as part of her night sleep and then isn't tired enough in the evenings so is treating it as another nap and waking for some more A time. The fact that she is waking to play kind of points to that too.
Can you put her down nearer to 8.30am, but make sure your DH wakes he after 2 hrs max even if she is still sleeping? Lots of babies are happy to have a shorter A first thing in the morning so this may work for a little while longer, but I doubt a 6 month plus baby will take a morning nap 1.5 hrs after waking
. Mine certainly wouldn't!
If the afternoon nap is starting to shorten to nearer 1 hr she might need a little bit more A before it.
I also think I would limit the catnap to 45 mins.
I'm afraid the 4hrly EASY does start to get a bit messier once their A increases, and you sometimes have to get a bit more imaginative with the feed regime, until solids start to bridge the gap between milk feeds.
Hopefully Anna will see this too and offer her advice.