Sometimes kids (is your daughter still a “kid”?) need a little guidance in choosing cakes! If she loves strawberries and chocolate, it works better to make the cake chocolate and the filling strawberry. Strawberries are far too acidic and that messes up the chemistry of a cake- been there, done that, and mine, too, failed. From what I’ve experienced and read on the web, those cakes are always too dense and compact. I have even tried grinding freeze-dried strawberries for part of the flour (and tempering the batter with baking soda), but that, too was less than ideal.
Any chocolate cake from TCB could be paired with strawberry cloud cream, or whipped cream and pieces of strawberry, or (like Patrincia suggests) strawberry mousseline. Rose’s “Strawberry Maria” is one of my all-time favorites from TCB, it suites my tastes perfectly!