Jess sits patiently through the ceremony knowing her best bet to slip out would be once everyone was leaving. Sure enough as the crowd filters out, Jess ducks between a few pairs of legs and was gone before the woman even noticed. Jess does feel bad that the poor woman will likely be freaking out about losing "Annabelle", but there's nothing she can really do to fix that at this point.
She slips back into the room where she left her adult clothes on the off chance they would still be there. Unfortunately she has no such luck. Unless she wants to walk home naked, she is going to have to stay in the biosuit for now.
But given that a rogue flower girl was going to be a hot target, she needs a change of clothes. Luckily this church had a daycare center so parents didn't have to take rowdy children to services, so Jess was able to trade out the flower girl dress for a sundress. Making sure the coast is clear, Jess slips out and heads for home.