Can a person have dissociative identity disorder when drinking alcohol ?!

Can a person have dissociative identity disorder when drinking alcohol ?

When this person drinks {which is not very often}her personality completely changes,she starts speaking in an English accent,but has never been out of the United States,her parents are from California......this person becomes extremely sexually aggresive,and then in the morning acts like nothing has happened,I dated this person for about 3 months and noticed this about 7 or 8 times,she was abused as a child but i do not know all the details,when not drinking she is a very articulate,smart ,charming person...a good job and successful,I have met many people since our breakup that known her for 25 years,and I am not the only person who has seen this..I brought this up with her and now we do not talk anymore,but I still am concerned....also she has said things in this state to me that she totally denies the next day{I love you,I need you,don't ever leave me,will you always protect me?}..always in an English accent..strange !!!

A person who is multiple/DID is going to be that, whether she is using alcohol or not. The issue at hand is does she show her other personality at times when she is not drinking?
Are there other times or situations where she does not remember what she has said or done -- does she have missing time?
Are there other distinct voices, facial looks, sets of opinions, specific knowledge, or other ages that she comes across
with? Can she play the piano or do math, say, in one personality, and yet not in another?

I am not up on more current statistics. 15 years ago when dealing with DID, I learned that the AVERAGE DID diagnosis took place after 7 hospitalizations for the one person. That says to me that there can be alot of problems going on with the person, before these other personalities are visible, recognized and identified, or treated.

Getting a long range observation here is really important. Are other people identifying the same thing you are?

In DID the core person we see everyday is very likely unaware that the others exist. They are dissociative identities, rather known as alternate, unknown, personalities.
In not knowing the others exist, that is where the missing time comes in, the core person doesn't know the other alter has taken over being "out" and in control. One of your specific clues in this case is that the woman uses a specific accent, not used when displaying other, more average moods. This could very well be indicative of an alter personality. Are there other times when she is childish? Fearful? Aggressive? Shows extremely talented or knowledgable abilities? Maybe a personality that is silent or sick. Where there is a second personality, (from abuse or trauma) there are likely others if it comes from a repeated trauma situation.

The use of alcohol makes it easier to switch, or it may be her cue to change, lowering her inhibitions. That's not so very different from the therapeutic hypnosis used in therapy to access the other alters.

Some people function pretty well in their life. Others, though would greatly benefit or be much more functional and emotionally stable (eventual goal) when treated for their DID. It must be by a known and established therapist with a track record of helping these people with the disorder to become functional, to be greatly improved or cured -- Yes! it is possible!!!
Once there is a co-knowledge and the person understands how to join this knowledge and talent to make it accessible and under the control of the core person, this is how that person with DID will be cured, and function with only one personality.

You may have called it right about this person. If you keep even a distant knowledge of her life, especially if plagued by depression or self-injury or suicidal attempts, when the moment is right Speak Up and identify what you have seen to family who can see that she gets the help she needs.
Documenting what you have seen on paper may be helpful to be passed along to her Dr.s.