I wouldn't say that these words alone, "Chaire Kecharitomene," are a sufficient "proof text" for the dogma of the Immaculate Conception. I would say, though, that this Angelic Salutation shows that such a dogma is compatible with what is revealed in Scripture.
As for Mary, her spirit rejoices in God her Savior.
You have eyes but cannot see is all I can say. Ive tried to show you the truth on this. Its all I can do.