Do your 10-12 month babies feed themselves a bottle?

My SO's mother came to babysit the other night and when we came back she said our daughter didn't drink her mainly because she just gave it to her to do herself. She never feeds herself the bottle and I really wish she would because I'm about to have another baby soon. Do your babies do this? How do you help make them start feeding themselves? She eats food really good on her own but will not hold the bottle at all 😳😳😳 Help!

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