200g is a lot, but I wouldn't say massive. Remember the 200g is in relation to a 1700g snake (well, last month at least) so that's about 10% of her body weight. I had a hatchling go from 60g to just over 180g in one month eating appropriate meals every 5 days, so she tripled her weight! I'd say your girl is just putting on a little extra weight for breeding season.