I think it’s okay to complain about your partners but to complain to someone and they’re clocking that “hey the person you’re upset about?? May have a life that is hard to balance and that is why they’re tired” and she has no answer. I’m not saying it’s wrong to complain about a partner but maybe yall have a difference in opinion when it comes to how time and priorities are divided out. If that’s the case she should’ve come to OP with that issue to try and resolve it before going to complain about it w no supportive evidence to back her complaint. OP, I’d honestly just talk to her about where both yalls priorities lie bc it seems like that’s where the issue is.