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Note the golden ventral patch of setae- this is used to store plant resins for later use and for oviposition.
Without a resin coating, the survival rate of the eggs plummets sharply- with most dehydrating and dying inside the egg, or being predated upon by ants.
THere are probably more in the wood as they actually lay their eggs on dead rotted wood in the wild, and the larvae burrow into it. ironclad beetles do this too
IMO she's dehydrated. The slapping thing is pretty typical behavior of the thirsty tarantula. a spider that size will need a water dish at least 2" deep to adequately hydrate. it may be that your water dish is far too shallow for a decent drink.
A rehouse is def needed, ive noted...