Dearest Ọmọ Oódua Readers: She smokes & drinks too much, should I let her go?

Click banner for more info

UNEDITED:

 I've been dating this lady for the last nine months and I need advise as things
are starting to get free from hand. I am ready to settle down but I don't know if
 I ought to make this woman my spouse or let her go. I am madly in deep love
with her but she's not what I want in a woman. I don't know how I was able to
fall in deep love with her in the first place. She drinks an excessive amount of,
she smokes an excessive amount of, she even smokes weed, though she tries to
full cover up it but I've caught her a couple of times. She gets drunk at least one
 time every other week.
Continue

She's domesticated and is an excellent cook and s-ex
with her is needless to say very great, but whenever she drinks I see an
alternative woman. She's also very foul mouthed and can be extremely 
aggressive, particularly when she's high from smoking. Whenever she's sober,
 we have a great time and I start to consider her as the mother of my kids
however she gets drunk again and I view a totally different person.

I don't smoke or drink and I have even threatened to call off the relationship if
she doesn't stop drinking but that hasn't made a difference.
Should I propose to her or let her go? Will she ever change?
 Can there be anything I can do to make her an alternative woman?