You should have an honest deep conversation with her.
Let her know your feelings and make 100% effort to understand hers too.
Also if in real she is consistent but not in text. Its maybe because she is with her ex and afraid of him or something.
I can only think of this but she might have very different reason too. Thats why I started with honest conversation.
She is in a tight spot. A mother looking after her baby in the presence of her ex.
The only thing , I dont understand is the neighbour sleeping.
You said you both are in situationship from September 2025 to right now.
So the January thing.
Is the January 2025 before she even met you or is this January 2026 while she was in situationship with you???