Translation of "artful" into Spanish

The artful minx loves nothing about him, but his title and his delightful family seat.

A la astuta pícara no le gusta nada de él, excepto su título y la deliciosa residencia familiar.

I described it to them on the phone using a series of artful euphemisms.

Se lo describí por teléfono empleando ingeniosos eufemismos.

Come and sit down and forget all about artful little boys... and their five-shilling presents and talk to me.

Ven a sentarte y olvídate de esos chiquillos arteros... y de sus regalos de cinco chelines y habla conmigo.