Your crop might change the effective focal lens, but it won't change the lens intrinsic characteristics. Your 35mm is still a wide angle and will render the image as a wide angle would. Besides, 48mm, even though it's just only 2mm away from a normal lens is still not suitable for close ups like that one, not even a normal lens is; and if the subject already has some large facial features, well... the results won't be pleasing.
The focal length of a lens is the physical property of a lens and it never changes irrespective of the camera sensor. [..] always keep in mind that the smaller sensor is not magically transforming your lens into a longer lens – it is just cropping a lot of the image