This chapter is filled with intense emotions again.
The way you're describing Yulia's conflicting emotions is remarkable. Her pain, fears, anger, but also her love for Lena that is the only thing keeping her from drowning.
The part about Yulia thinking the little girl she was died in that basement and Lena replying she's not dead but hidden inside is particularly moving. It helps to understand how Yulia feels, how she thinks that her true personality died a long time ago and that what she is now is only Tom's creation, not really *her*.
Lena is amazing, she knows the right things to say, probably because she loves her so much.