It looks like you’re sharing a dramatic story, but the sentence cuts off mid-thought, so it’s hard to tell exactly what you want (finish it, rewrite it, or polish it).
Here are a couple of possible clean continuations depending on the tone you’re going for:
1. Neutral continuation (story style):
“That’s what my mother-in-law said when she saw me bent over in pain at thirty-eight weeks pregnant, her legs swollen and her expression hard to read…”
2. More emotional / tense tone:
“…her legs swollen and her face set in a way that made it clear she didn’t fully understand what I was going through.”
3. If you meant “her hard stare”:
“…her legs swollen and her hard stare fixed on me as I struggled to stand.”
If you tell me the vibe you want (sympathetic, angry, dramatic, calm), I can refine it exactly how you need.