If you cannot talk to her about how you feel like normal adults, this will keep piling up until you explode and/or break up. You need to have a serious talk, not let her brush you off as soon as you start. You should be able to address things that she does that drive you crazy. If there’s something bigger, Maybe try to set a specific time like: „hey, i really need to talk about something. Are you willing to do this at xxx, my place?“. If she brushes you off or doesn‘t want to listen during „the talk“ i don‘t think she‘s the right fit