Is it OK to tell your girlfriend that she's not putting in enough effort into the relationship?

do you guys think this is a good or bad idea. basically I would like it if she put at least an equal amount of effort into our relationship. an example would be she'll ask me if I can get her something cause it broke and when I get it and ask her when to drop it off, she just says I don't know... seems to me if I can go out of my way to do this for her, she can at least put in enough effort to just tell me when to drop it off. and this happens a lot not just this one time. so I basically want to tell her something like, "it'd be nice if you could try harder to accommodate my help..."
Is it OK to tell your girlfriend that she's not putting in enough effort into the relationship?
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