rooted nook hd plus now dead

I rooted my wife's nook hd plus using leapinlar's method everything went fine it was rooted and everything worked like it should but I forgot to back up . The next morning I went into cynaboot recovery and started the backup it was going well but the wife said we needed to leave before it was done so we left it to finish while we left. When we got back was told cat slept on top of nook and now I can't get it to boot , charge , or anything. When I plug it up it goes green orange and then off and the screen never lights up. Don't know what is wrong is this nook completely gone or is there someway I can use sd card to boot and get back to life . Anybody's help would be greatly appreciated