The cage had a lock with a combination dial on it like that on her locker at school. It was attached to a chain that had a plastic wrap around it. She felt crammed into the cage with her belly pushing into the cold floor.
She had no room to move and she wasn't an expert on lock picking so she started yelling for help.
Soon a red hair, pasty white freckled man in his late teens.
"What the fuck?!" shouted the man.
"Please...help...me..." gasped Meg.
The man fainted. Sighing deeply she continued to shout until he came to. Ralph had nearly had a heart attack, in that cage had been a pregnant border collie, now it was a pregnant teen.
"Look at me...please" begged Meg
"Who the fuck are you and how did you get into that cage?"
She considered her options (1) claim it was aliens that curse her to morph between a teen and a dog, (2) tell the truth, (3) blackmail him.
"I'll level with you I have been exposed to something alien or magic that has left me curse to change between what I am now and a dog."
"Exposed to what?"
"Doesn't matter, what matters is that you have to let me out, do you have a security camera?"
"No." he stammered.
"Good" Meg sighed.
"Now" she continued "you'll have to get me some clothes and let me go."
"please just let me out."
"EXPLAIN WHAT YOU ARE?"
"Listen let me out or I'll tell the cops that she have taken a pregnant teen and locked her in a dog cage as some bondage sex thing."
"They won't be-" he stammered
"Will they believe that I am a pregnant teen who is cursed to turn into a pregnant dog on an irregular basis or you locked me in here as some kind of sexual torture? You're word against mine."
He let her go on the understanding that neither would talk of this ever again.