On Oct. 3 I'm rescuing a 5 year old chi mix named Ruthy. She is the sweetest dog ever. According to her foster mom her biggest "fault" is her clinginess and loves to sleep in bed with her humans, which is the opposite of a problem for me. Ruthy is housebroken, unfortunately, she's been trained to use a doggie door... and I live in a third story apartment. What do I do? Thank you in advance for your direction.