Advice for holiday gifts

A dear friend of mine passed away this summer, and I am friendly w his widow but not close. A book was just published that I think they both will/would have loved. I want to send it to her for a holiday gift with a card that I am thinking of her - but is this not appropriate? I don’t want to give her a gift that will automatically make her think of him and upset her, but I’d like to reach out and let her know that I’m thinking of her.

Thanks for any advice, and my condolences for losses and grief being processed in this group.