no she is just a little weird. Plus when her Zanpakuto Haineko made fun of her calling her a hag because young men don't like her. she was in 爱情 with Gin. That is why she was hurt so much when he left. In the picture he is telling her he wishes he could stay in her captive (or something like that) a little longer.
Honestly, if tickling someone of their own sex, even while naked, is a signal that someone is gay, then there would be a lot 更多 gay characters in various anime. Also, considering the massive number of confusing actions that take place, in series like Bleach, this ranks pretty low on the weird and sexually suggestive scale.
