No, I understand but times change. In my desc it says, "You are not authorized to use this artwork.-If you have a request, commission, trade, question or comment-- Please send me a note and we will discuss the terms." Meaning that I require a commission fee for all use of my artwork, it's not free game anymore. I designed this years ago, and then I wasn't making money off my art, but after the high amount of people liking these designs, and the amount of money I get from my work, it's a paid trade now.
I understand you have been through alot, and rushed for time and all but please do not make assumptions, and ask the artist before you take their artwork.
I am fine with it now, mistakes like this are the reason I am going through and redesigning my deviantart.