Has she told you specifically what it is she would like you to do? I actually have a similar problem with my fiance. The way I feel love and the way he shows his love don't really add up all the time, plus he needs to be told exactly what I want him to do in certain situations simply because the things he would want in that situation are different than what I want. Plus, for whatever the reason, he struggles a little with empathy/hypothetical situations. Maybe the next time you have one of these conversations and she says "show me love!" say to her "What can I do that would show you that I love you?" Tell her to be specific. I tell my fiance that petting my head, tight hugs, and singing are way of showing me love (We've even started listing random things in bed at night because his voice helps calm me and listing things is easier for him than having a conversation). She might get a little offended that you don't simply know what to do (Trust me, it took me some time to emotionally understand that my fiance couldn't read my mind. If I'm already upset, I still struggle). Just try to gently remind her you are human, you can't read her mind, and you do want to make her happy and loved, but don't know specifically what that looks like to her.

In regards to the problems you're having with the conversations... I kind of wonder if you're getting a little burned out on those? Is anything new being said? Or are you guys simply rehashing the same things over and over? Perhaps trying to limit those conversations and get back into talking about normal day to day things ("I sat with Joe at work today; his wife's having a baby" type conversations. I've read somewhere that couples that discuss the minute details of their day are happier than those who just answer the how's work question with "fine" without further discussion). Also, maybe the time of day you're having those conversations is affecting your ability to concentrate. If I try to have a serious conversation at night with my fiance, I'll end up repeating myself a million times, getting crazy frustrated, and not actually solving or make any sort of progress on any of it. If we want to talk about something important, the earlier in the day we do it the better (but I'm not a morning person, so there's a little bit of a balancing act going on...).

I hope some of this helps! I'm sorry you're having trouble right now! You could always try talking to your counselor about this. Good luck!!