Help with Japanese Maple - Green Filigree

I purchased this beautiful filigree maple. I asked lots of questions regarding soil, sun exposure and watering. I have icky clay soil, so I got a truck full of great soil and created a hill so tree would not have trouble in soil.
My tree was doing awesome, it even was getting new leaves, then this crazy Utah weather has made it tough on my tree!
It went from 70 degrees, to 90 then 34 one night. I think the cold spell did some damage to it.
I noticed all the leaves were a bright lime green, now the top layer of leaves are maroon and the edges are getting a little burnt. I was told this was due to lack of water, so I have been giving her a good watering twice a week due to temps being back at 90 degrees, it also gets watered from the sprinklers.

I know these are tempermental, and dont want to lose it. Any suggestions? Maybe I'm watering too much now? Maybe its getting too much sun?
I'll will take a picture and post it also.

Hi Flowerprincess, cant work out what you meen by making a hill, did you dig your good soil into the clay and break it up into better soil condition, OR, did you just build a hill on top of the clay, if you did the later, then all the watering you are doing is prob running off the clay bed, and the roots aint really getting any, however, if you mixed the good soil with the clay in the planting hole (which is the right way) then it could be all of the things you mentioned, or just one or two. Certainly, the planting, then the real cold snap will have caused the tree to go onto shock, this will have caused the leaves to wilt a bit, and that makes them loose their firmness, then the hot sun on wilting leaves has added more stress to the tree, so I would sugest, IF you just added the soil to the TOP of the clay soil, then dig a hole, much, much, wider and deeper than the pot the plant came in, add some good soil to the clay and mix it well together, then add some to the hole, test the deapth of the hole to make sure you have enough soil in, so that the tree is going into the hole to the same deapth that it was growing in the pot (you will see the soil mark on the bottom of the trunk where it sat in the pot, once you are happy it is right, backfill the hole with the same mixture of good soil, then really firm this in with your feet (make sure you dont leave any big air pockets in the planting hole, but dont stamp on the soil either or you will compact the soil too much, you will be firm but not stamping on it) it is a good idea to leave a slight dent in the soil as in the heat, when you water, this is going to the roots and not going anywhere it aint needed. Clay soil is really so cold in the winter/spring and takes ages to warm up, then when it is hot, it bakes to a dry crust and water cant penetrate, so it just runs off, it doesnt hold any neutrients and food that plants need, so you have to add them, but the rain washes them away due to the soils construction, so by adding your good soil, you are letting some air in for the roots to grow and that meens as they do, they are able to get the food they need also, If you are going to replant the tree because of any of the points I have sugested, then add some general multi purpose feed to the new hole, it will tell you on the packet/box how much to use, this will help the plant build up a good root system, it is also a good time, when planting, to tease out some of the fine roots so they get a quicker chance to spread out and stablise the tree for winter winds. Really the best time to plant trees is either autumn because the heat from the sun aint so hot and the soil still has some warmth, or spring, just as the earth starts to warm up unless you are able to plant in shade in the summer. You should be a bit patient as trees are tougher than you think, and they can recover from a lot, it will prob recover once it comes out of the shock it had with such different heat changes, so dont get into a panic just yet, however, I would certainly check the root system, as it could be too much water if you have not mixed you good soil in properly, or no water at the roots because the watering you are doing is just running off the clay soil under your hill. hope this helps you, it sounds confusing, but better check now as the tree wont have put down any roots yet, so you will still have time to fix the problem. Good luck, hope it all works out for you. WeeNel.

O shoot! I just struggle with trees I guess.
I originally planted the tree in spring and planted it exactly how you said. Then a guy who runs a nursury here, told me to dig it up and plant it on top of the soil, and heap it with good soil.

I did however backfill the original hole with lots of good soil so maybe it will help?
I'll dig down in there and see what I can do.
Thanks for the info.