If she is saying it seems like you are giving her cpr, I would say you are probably using too much tongue.
Keep your upper lip and your lower lip closed at first and try to kiss her lower lip. If she opens her mouth then go ahead and slide your tongue in but gently and only for a few seconds. If she doesn't open her mouth you haven't built up enough attraction just yet so kiss her a little longer the second time while you are still keeping your mouth closed. Eventually she will be ready to be macked on, and when you are macking, just remember to use a lot less tongue than you have been.
Keep your upper lip and your lower lip closed at first and try to kiss her lower lip. If she opens her mouth then go ahead and slide your tongue in but gently and only for a few seconds. If she doesn't open her mouth you haven't built up enough attraction just yet so kiss her a little longer the second time while you are still keeping your mouth closed. Eventually she will be ready to be macked on, and when you are macking, just remember to use a lot less tongue than you have been.