Are there any reputable dating sites for people with autism?

Hello, I am trying to help my friend find a UK based dating agency for his daughter.

She desperately wants to be in a relationship but unfortunately she is putting herself in situations where 'men' are taking advantage of her.  She seems easily woo'ed and eager to please which is definitely not a good thing.

Obviously he is worried about her and her safety.  We thought that perhaps by joining a dating website aimed at people with disabilities (where possible suitors might be vetted).... It would be a better road to go down.

Any advice? And suggestions?

Is there a pen pal scheme or a chat group online that the can talk to like minded people?