I think Gobly realized his mistake after the fact, considering the "gasp" and immediate stuttering escape. Hopefully it will be resolved next chapter. This little sweetroll needs to be happy.
Oh no it's tragedy! Now gobly will destroy that paper plane near the tombstone and a war will break out between rain woman and gobly family. Soon the youkai world erupts into a total CHAOS. War and destruction everywhere...
Or the gobly father just make a new one, kids will shake hands, become friends and everyone live happily ever after.