When the arousal's just too much!
Mari can barely contain herself. She's just been told what's inside all those gifts, and knowing what the days ahead have in store for her is enough for her cock to burst out from underneath her dress.
This sequence will admittedly make a bit more sense when I add some writing, but until then I think her body language sufficiently suggests that she can barely believe how lucky she is.
That last shot was also present in the curiosity tier post, but I added it again to visually complete the sequence in this post.
