I thought it was really cool, too!! Her egg colorer must have gone wonky because it has a couple of light spots on it but the heart just freaked me out!!
To save it, carefully make a hole in both ends. Then make the one in the round end a little bigger. You should now be able to blow the inside egg out into a bowl by putting your mouth to the small hole and blow until your head feels like it's going to explode. What remains: one empty shell. Give it a rinse. (My mum showed me how to do this and then hang them up, using a loop tied to a match, then inserted into the large hole until wedged inside, leaving loop outside.)