First thing I gotta say, feederism Lyrabon is probably my least favorite fanon ever, and the whole feederism thing just weirds me out.
But, when your brain comes up with an idea like this, you kinda have to draw it.[link]
As to whether Bon Bon intends to make Lyra explode, that's for the viewer to decide.
Also tried a different way of sketching, this time.