WIBTAH for telling my son’s friends mum about a rejected birthday present ?

My son is 10, and all his friends are girls. He’s very sensitive, and often the only boy invited to the girly parties (they’ve hit the age where typically the kids split into boys/girls)

Where we live Labubus are HUGE. I’d arranged for a gift basket for Girl A’s 11th birthday. It had face masks, hand creams, boba tea, you get the idea. I think the package came to about $30 or so.

My son was desperate to give her a Labubu. The main ones retail approx $70, which was too much, but he found a smaller keychain for $40, so we added that to the basket.

He’s just come back from the party devastated. Apparently A was super excited, but then saw that it was a) a smaller keychain (but genuine) and b) not the one she wanted (they are in blind boxes) so literally threw it away. My son says she said ‘this is rubbish, not what I want, anyone can take it’ So he picked it up, and asked to be dropped home as soon as possible.

Now I’m in a quandary. Do I mention anything to the mum? It was discussed that there was a labubu in the basket. I’m on ok speaking terms with her. Or do I just let it drop? I am LIVID for my son, who was so excited, and gutted by A’s response. But WIBTA for taking it further? Should I just let sleeping dogs lie?