My girlfriend needs help (please read and proof read this before you suggest a thing).

Ok me and my girlfriend both have Autism, but her maturity level is not as high as mine and her conceptual levels might not necessarily get as high as mine but I can deal with that.

But the biggest problem she has is lying and most of the time she lies is when she has done something wrong and chooses to lie about it instead of admitting that she did this or that bad deed.

Her Grandma does feel I am an awesome guy and im sure her Grandma feels I would be a good guy for my girlfriend to get married to, but at the same time she feels my girlfriend is not ready to be married yet, and I understand why too.

Her Grandma for instance does not want me to have to babysit my girlfriend and yeah I agree of course, cause I don't wanna have to be a babysitter either.

But anyways back to the biggest problem my girlfriend has, so far she hasn't had a major problem lying to me but she use to lie to her Mom who is now dead and she sometimes lies to her Grandma, and I have tried my part to break the habit.

1st thing I tried was making her sign papers promising to not lie and for a month and a half that seemed to have worked (cause it was like something was signed, her Grandma has a copy of the paper, her Aunt has a copy of the paper, I have a copy as well).

But then one day when I called, her Grandma said "I don't want to punish you but she lied to me so I am not gonna let her talk on phone or be on PC rest of the night but I will let you talk to her later on for 5 minutes to give her a talking to).

So later on I did place the call to do the 5 minute conversation on why to not lie.

This weekend when she lied about something, her Grandma and another one of my girlfriend's Aunts discussed the issue of wanting to do something to break my girlfriend of the habit of lying.

The reason I am asking to please read and proof read this is because well, I am looking for good and helpful suggestions, because well I tried to ask for advice on an Autism forum called Wrong Planet but I was not given the greatest of advice by very many people, one guy suggested let her lie and I tried to explain to him he is doing more harm than good.

Another person tried to suggest my girlfriend does not want to get married but I know she wants to get married, she even told me so before me and her became boyfriend/girlfriend and i've discussed it with her Grandma and her Aunt so I know full well my girlfriend wants to get married someday.

From the time my girlfriend was 18 up until her Mom's death, her Mom had legal guardianship and power of attorney over her, but under the law of my girlfriend's state, when the person who holds power of attorney dies, the POA becomes null and void.

But we are not sure if anyone else held those things along with her Mom or not, but we do know her family is not going to even approve of the idea of her getting married at all until her maturity level rises and one way for her to raise the maturity is to break the habit of lying when she has done wrong.

I do believe she can raise maturity level up to a point of her family saying she can get married, so I am asking if anyone has any advice on what would work to help my girlfriend (an Autistic person now age 24) break the habit of lying.

I am open to hearing very good suggestions, thanks for listening and God bless.