Aquarius bf/Scorpio gf

So I started dating this Scorpio girl 5 months ago and in the beginning, she was really into talking to me and everything. But as time passed, she started growing more and more distant from me and now she rarely talks to me. I don't know what I did wrong, but perhaps I presented myself as too clingy and always wanted to talk to her (even though she says she likes it when I call her often). I feel like the personalities are reversed: She doesn't get jealous at all (Even from the beginning) and I'm the one who always wants to talk to her. Sometime when we talk online, she forgets that she's talking to me when she gets distracted by the phone or such and just signs off later on. She says she loves me occasionally. Also, we recently got into an argument where she felt hurt (I was just telling her that I didn't feel respected when she made me feel like I was insignificant to her) and she didn't want to talk to me anymore. I told her that I wouldn't contact her anymore until she talked to me and after 3 days, she finally talked to me. When I asked her if she felt any better, she said no. I can see many scorpio traits in her but I just don't know how to act anymore. Should I just ignore her or should I seek to talk to her more? I really love her but there's not much more I know I can do to get her attention and for her to love me. This is also a long distance relationship and we can only see each other once every 2 months or so. She's 15 and I'm 18. I also know that scorpio girls like alpha males, and I'm willing to act like one, but I don't know if it's too late now (I do act as an alpha male when I'm with her in person, but I guess I just don't when I'm online with her which is the majority of the time). It's especially difficult for me to move on from her because we were friends for 4 years before we started dating. Just what is it that she wants? If it helps, her moon is Sagittaurus and venus is also scorpio. It'd help so much if I knew exactly what to do.

I agree with exo....too much clingyness is too much. I also agree that at 15 she may be too immature for you.