My dog will be at a pet hotel for 2 weeks. How many of my used clothes should I pack for her?

I am going on a work trip for 2 weeks and checking in my dog at a pet hotel. This is my first time leaving her at a new place for this long, and the pet hotel supervisor has recommended that I pack some of my used clothes to comfort my dog.

My question is how many should I bring? I'm not really sure how long my scent will last on the shirt. She's quite clingy and gets noticeably sad whenever I am gone for too long so I am hoping my clothes will tide her over for those 2 weeks.

Thanks in advance for the insights 🙂