Prior to those regurgitations she was having issue feeding, that means no food which means no weight gain or very little depending on the food intake. What size prey were you feeding before the regurgitation issue?

I am curious when you had the first regurgitation did you leave at least 2 weeks with no food before the next feeding? If you did not this could explain why she keeps doing it.

Finally also keep in mind that failing to gain weight when fed adequately (proper size and frequency) and regurgitation could be a sign of internal parasites so you might want to get a fecal done.