Offering “hand me downs”?

Hi again friends! I’m back with another employer etiquette question

I recently got gifted a pair of Badgley Mischka pumps by my mom for a family wedding we’re all attending in May.

Thing is, my post partum swelling hasn’t really gone down yet and while they slip on okay over my feet, they’re uncomfortable and I don’t like the experience of wearing them

I put “hand me down” in air quotes because they’ve only been worn once, this weekend to dinner

During her shift today, my nanny expressed admiration for them.

I want to offer them to her since they’re closer to her true size, but I don’t want to make the same mistake I did offering a gift like I did the last time (check my post history)

How do I go about asking if she’d like them?