Ok what happens is that they fall into an exhausted sleep at 7/7.30pm and follow three deep sleep cycles ( which is why you can bash around in their rooms early in the evening). Each sleep cycle is roughly 45mins. When they are really really overtired, they will wake during this period.
After 3 cycles - roughly 2 1/2 hours, they transition into lighter sleep, and this transistion can cause problems if they are not used to settling themselves, or overtired, so they stir more and wake.
I would think it is very little to do with feeds to be honest at this point.
You may have some success at going into the room just before you would expect her to wake for the first time, and just keep a hand on her, to sooth her into the next sleep cycle. This means less disturbance at this point, so she will start to catch up on the sleep.
As she becomes more rested, I would expect that the wake-up times become later in the night. Generally from my own, and others in a similar position's observations, the earlier the wake-ups the more overtired.
You could try cluster feeding earlier in the evening, then missing the dreamfeed out, thus as mentioned, avoiding that episode of disturbance. Perhaps wait for a wake-up to feed and sooth back to sleep.
Generally if they can settle at naps and at bedtime, it's not a sleep training issue. You have done really well to get her to do this part already. My DS was too tired to get to sleep in the first place!!
Sorry for long ramble - but hope it makes sense.