my daughter is depressed ,IIN to do this to help her ?

Several reasons i dont agree.
The daughter will feel like you are interfering should this idea go wrong.
The daughter may think this guyis cute or whatever but that doesn't mean she likes him like that.
The daughter may hav something she wants to express but is unsure of the outcome (she may be lesbian)
This guy, while im sure his public record is sparkling (volunteering and such) but experience should have taught the mother that this is only the face he presents to the public. Such ppl usually have an unhealthy way of dealing with the stress of presenting a perfect life to the public.
And finally, we've all seen the movies where this idea goes bad bu eventually ends happily ever after.. This is not a movie. Should it go bad thismother will have ruined her kids self esteem, such as it is. And bring something between them that may not be fixed.
Finally, you just dont do this sort of thing. How would you have felt if your mother had done this to you.. Be honest, you would probably have freaked.