Eh, pretty much the general opinion. She was just kind of there and I can't form a proper opinion of her since she was a sudden character and there wasn't much of her. At most I can say I did find her kind of creepy because of how earnest she was to Izaya but otherwise I don't have much of an opinion of her.
Just based on the anime alone, no one can have a true opinion of her. Though her godlike idolization for Izaya is annoying but if you read the light novels..( I found them translated into Chinese and bought them immediately. ^w^ Who cares if the language hurts my brain. )
She's okay. I still don't really have an opinion of her.