I just find it painful to watch. Her friendship with the other women has been turned from a slightly uncomfortable but also endearing dynamic into one in which they seem to constantly snigger at her, and cut her out when they can, and as for the relationship with Sheldon... It's like watching Olive in On The Buses again. It's humiliating and unnecessary.
Her character was such a strong one at first, and over the series it's become actually pathetic, in its truest sense. She is rejected all round, and it's just not funny.