Unless you put your yuri goggles on, not even close, considering she was scared of Yui when she thought Yui was in love with her, and ends up hitting her with her elbow because she thought she was going to hug/kiss/rape her.
Then she wraps herself up in blankets and looks horrified when Yui gets in the bed with her. She looks so scared that I highly doubt she was just being tsundere.
She absolutely likes Yui, she likes her more than any other of the keions, but having a crush on her might be a little too far.
Unless you are a yurifag, then yeah, they totally fingered each other in that night on the hotel.