She calls the daycare didi 'amma' sometimes. I'm trying not to mind

Heard it twice at pickup on Thursday. Didi corrected her very sweetly and my daughter didn't seem to notice either way. I know she spends more waking hours with didi than with me on release days, and I'm glad she's attached to someone kind. It still stung a bit on the drive home. Did this pass for anyone, or did you just stop minding? 🤷