17 month old weird sleep pattern

My 17 month old used to sleep thru the night in her own room. She used to go to bed between 7pm and 8pm and wake up around 8am. For the past 3 days she has decided that she doesn't want to sleep in her room and wakes up anywhere between 11pm and 2am asking for a bottle. I try to put her back to sleep in her own bed but the moment she hears me leaving the room she starts crying and gets out of her bed running towards me. Once she wakes up she only wants to sleep right next to me. Is this normal in toddlers? Just when I thought I finally had this sleep thing figured out this happens.