The wing-theory sounds most convincing to me, but given the nature of this manga I'd love something stupid. Like turning herself into a tiny moth or ... no idea.

... also doesn't she have a bat familiar? Maybe she could summon her; or telepathically send a message or something.
... also also I wonder whether overt use of vampire powers will finally bring the nun into play.

I can work with either, but I must say I'm leaning more towards team "cute fuzzy little bat".

Like this?

I can work with either, but I must say I'm leaning more towards team "cute fuzzy little bat".

Like this?

Yes!!! That’s exactly what I had in mind when the comments mentioned her turning into a cute little bat!
But contrary to Ruruna-sama, this bat really had the power to rule and is a true girlboss, instead of the girlfailure lesbian we have over here lol~