Appropriate Hint or Topping from the Bottom?

As many of you know, my wife struggles with "thinking sexually" due to her low libido. This morning I was going to the mall to return a pair of shoes of hers that don't fit and she handed me a Victoria's Secret free panty card. No big deal really. I told her that I'd enjoy going in there solo and getting a panty for her. That I would most likely be aroused. But alas, she decided the shoes do fit. I told her that because expecting guests, that I probably wouldn't go to the mall just for the panty. She agreed.

A bit later, she texted me and told me to go anway because she said so. Later she said I was to "think of her" our wording for me to arouse myself. I've picked up the panty and yes I was a bit aroused. And more so because I can't wait to tell her.

There is a pretty significant chance that she made me go anyway because of how aroused I told her I would be and how much enjoyment I would get.

So: Was this hinting on my part or topping from the bottom? Are hints OK? Do you hint?