This is genuinely the peak of what this genre can be — the updates show you care about the experience, not just the concept! Some Audio Suggestions:
Breathing: Starts normal, progresses to heavy, then to strained grunting/gasping at Orange or Violet Dots.
Stomach sounds: Subtle gurgles and pressure noises that increase in frequency
Fabric sounds: Stretching, shifting, the sound of her outfit straining against bloating
Scat release: Wet "splat" or "squish" sounds
Combo buildup: Rising tension hum or heartbeat that speeds up
Release Sequence Audio: TSharp gasp or "I can't—" cut off. The event: Continuous sound (your choice of texture—wet, heavy, splattering, etc.) lasting 3-5 seconds