If it is hosting in the mushroom, it's probably just wiggling down into it. Clowns like to snuggle in their nems. What she really needs is an a nem. If you don't want to get a nem, try a hammer, torch or frogspawn coral. My clown liked hammer coral before I got a nem.
Well ... here's another possibility. My clowns prepare their nesting spots for days ahead of laying eggs. They will both continuously "naw at" the rock next to their nem. I think they do it to remove any algae or other contaminents, although to my eye there is nothing there at all. So, maybe your clown is getting ready to spawn.
Nothing. LOL! Trying to raise them is tough, and you have to keep them in a clown only tank, with special food, etc. So most people (like me) watch their clowns lay egss and guard them for a few weeks til they hatch. Then you never see the fry, and presumably something eats them. Then repeat the process. Clowns seem to spawn around the full moon.
If the clown fry act like damsel fry, they hatch an hour after the lights go out. Protein skimmers and pumps destroy them pretty fast. I am attempting to raise some of the damsel fry from my large tank in a 14 gal nano, which is cycling now.
Q? If you have fish that are acting like this, can you move them to a new tank? like take some of the substrate the nem and water from the tank? That way the new tank won't cycle? Or will it cycle anyway? just curious, my bf and I are thinking about getting my clown a mate.