On the screenshot "children hikashop options", the menu is displaying "categories", but in the "associated modules" option, there is no module selected. So you must be missing the products listing when you go on that menu's sub categories.
You should make sure that there is a products listing module published in the "associated modules" option of that menu.
On the contrary in the screenshot "mainly girls hikashop options", the menu is displaying "products", but in the "associated modules" option, there is a module selected. So you must see an additional listing below the listing of products on that page. You should unpublish the module you have published in the option "associated modules" option of that menu.
Normally, when you create a new menu from the menu manager, all that is handled automatically and you just have to select the correct parent category in the hikashop options and maybe other display settings. So if you have troubles with a menu, you should try to delete it and recreate it from the menu manager.
Also, we improved a bit the process in the version 1.5.3 of HikaShop so you might want to update...