What’s happening

My little girl turned 2 on Jan 2. That week she bad a pretty bad case of RSV that almost left us hospitalized— her o2s were in around 84 and her breaths per minute were around 76. Scary stuff, but since last week when she was sick she has not wanted to fall asleep alone. It’s like she’s scared, which is totally not like her. She has slept through the night literally every night until she was 6 weeks old, until recently... what is happening? I feel bad for her!