Pet Chihuahua. worried she may be sick?

My pet chihuahua has been sleeping a lot for yesteryear three days. She hasn't eaten much, not even the Beggin Strips I offer. I had a 12hr road trip I brought her on. I be driving, she stayed on my lap and slept, I walked her about for times during. Do u guys surmise tht could of warn her out?
Answers:    It is possible that she is worn out from the long trip but she also may not be used to being in such long trips. As long as she shows no unusual signs such as diarrhea, vomiting or not eating at all, she should be fine.

Make sure that she is up to date next to her shots, including worms and other various shots that will protect her.
YUP. AND SHE IS SICK OR SOMETHING? OR JUST HOME SICK.
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