what is this plant?

my neighbor gave me this plant the other day. she didn’t know what it was and apparently got it from her mom. it had all bright white blooms and then i watered it and over the next few days they yellowed. i have it inside in bright (mostly) indirect light and was planning on putting it out on my porch in the shade when it’s warmer. please help! it’s so pretty but i am a newbie to plants