What actions do you do that show her love? It sounds like she has an anxious attachment style. You should look up attachment theory. It would help give better perspective on the different needs of both of you and help her be aware that she needs to work towards being more secure (with your support of course should you choose not to break up). Figure out why she feels like she needs more verbal reassurance, and then explain to her that you show it through your actions. The point of learning each other’s love language is so that you can understand each other’s needs and work towards speaking each other’s love languages so that both people feel like their needs are met.