Watchful
Alert, watchful, observant, percipient, aware, heeding, mindful, on guard, on one's toes, on the lookout, intent, engrossed, committed, diligent, rigorous, interested, beady-eyed, on the ball, awake, wide awake, perceptive, acute, noticing, heedful, vigilant, on one's guard, on the qui vive, concentrating, absorbed, focused, studious, scrupulous, earnest, all ears, not missing a trick, and regardful.
Thoughtful
Conscientious, thoughtful, kindly, tender, understanding, obliging, gallant, polite, courteous, civil, reverential, responsible, mannerly, considerate, kind, caring, solicitous, sympathetic, accommodating, chivalrous, well mannered, gracious, respectful, dutiful, decent, and regardful.