They are expensive but I recommend the pampers harmonies, I was bought some and they are slighter bigger than standard pampers size 2 and seem to cover more of their body
Size 3 pampers premium are the best for us
Size 3 Sainsburys nappies are brilliant. We were previously using Tescos however the Sainsburys ones we found to be better due to the elasticated back.
Size 3 Pampers premium protection are by far the best nappies, so I look for offers and discounts on those! Although, Asda ones have been good too in the past
Have you tried sizing back down to 3? My son was in an awkward phase when he was growing out of size 1 where he’d blow out and leak in size 1 but would also blow out and leak in size 2. Could be she’s just between sizes at the moment? It sounds like size 4 could still be a little big for her.