Hi Marian....
Does your little one go to sleep indepenently? If she does, it's OK to feed before a nap vs eating as soon as she gets up as long as she goes down awake. You'll just be tweaking EASY a little bit, which is perfectly OK
Also, if if she can handle it, you could do 2 naps inbetween feedings which might stretch her feedings out to 4+ hours which is also ok. Though, I wouldn't go past 5
~The short interval feedings could be the culprit of short naps (short naps are sometimes a sign of needing to go longer between feeds)
~Another something you could try for the naps is putting her down a little earlier...as soon as you see her first yawn or signs of tiredness. Sometimes overtiredness can cause short naps as well.
HTH