Sudden barking in crate at night

We have a 7 mo old frenchie. She has been crate trained and sleeps next to her sister (also in a crate) in the living room since we got her at 16 weeks. The past week she has started barking at night a bit after we put her up. The first night I thought it was bc she had to potty. She did but every time after that was a false alarm. I think she’s either bored (the one night I was in the kitchen all evening and she followed me the whole time she slept through the night) and/or separation anxiety. When we move her crate into our bedroom, she settles. I’m worried we’re reinforcing bad habits… how do I transition her back to the living room? … frenchies snore A LOT. I have tried to let her bark it out. One time she barked 15 mins then settled… most times she barks on n off for awhile… or stops and suddenly does it in the middle of the night when we’re asleep. Nothing in the environment or routine has changed.