And you wouldn't have to accept it if she WASN'T drinking, either. Whether she was drinking or not, you don't have to have that behavior in your home.
You might want to have your locks upgraded and an alarm installed, if possible. Thirteen is a little young to have to deal with an abusive drunk sibling who is trying to get in. Make sure your younger daughter knows how to call 911 and that she should not hesitate to do so if her sister shows up and tries to get in.
I suggest you contact your local DV hotline and find out whether you can get a restraining order barring her from your home (and also calling, texting, etc.). Even if you don't want to do it immediately, it would be good to find out your options. If you were to do that, the police could come and make an arrest immediately BEFORE the trouble starts. A good start, though, would be to tell her that she is not permitted to come to your home unless she is specifically invited.