donor milk?

So I wanted to ask your opinions. I am not making enough breastmilk to pump for my daughter through daycare, and my best friend who just had her baby offered to help me out. She is also breastfeeding and is making more than she needs, and she offered to give us some of her milk for daycare. Now, I wouldn't even consider it if she wasn't my best friend.. but idk what to think about it. I know breast is best. So I want to avoid giving her formula. Is this weird, or should I do it?