Well first no it does not enjoy being held that's just what some pet owners think.

The questions to ask are

Feeding habits which includes prey type and size as well as frequency and also fasting.

Health history covering the last 13 years.

Husbandry which includes how the animal has been kept for the last 13 years (temps, humidity, substrate), this will let you know if the animal has been kept properly for 13 years but it will also allow you to mimic the same environment so the snake settles down a little faster (granted it was kept properly of course)