Are you referring to the literal planet rather than a woman? That character felt particularly of self insert fantasy (oo a hot 20 year old in love with the aged professor).

Regardless, stopping at the first book is a good recommendation. Asimov demonstrated he didn't understand what made his own work interesting. Granted mystery boxes are hard, but he took an immediate about-face on psychohistory and retconned any bit of intrigue with rather vanilla stuff. The first book is outstanding.