I think she's literally just handing out rings at this point, because she doesn't actually have permission to do the provisional marriage, so they aren't going through the marriage to Teito Kuu. (They probably aren't L99 with the base not fighting, anyway.)
But hey, hand a couple out to Ooi, Yamashiro, Hiei, and a few others who want to have shipgirl-to-shipgirl shipping fantasies, and keep them happy, right?
Teetoku-chan!Yeah... well...Y-You're sure!?Well, many things happened, but I wanted to tell you, Teetoku-chan, that you're the very first, okay?There's still another 99 to go...What is it?Payday can't come soon enough...It's something for you... a present!