If it doesn't help anything in the end, then there's no way it counts as doing something, let alone 'plenty'.

[ Apparently she was being stubborn on this, since her mind had already set itself on the idea that there was nothing she could do, that she had been useless.. but after frowning - mostly out of disappointment with herself, honestly - she just tried to shrug it off, despite obviously still seeming hurt from the whole deal. ]

.. Nevermind. It's no use arguing this now. [ She started to walk ahead of him (easier to hide her expression that way) now the beach was staring to get in sight with big firm steps. ] Let's just go.