I got my ball python about 7 weeks ago, and I'm wondering how old she might be because the person I got her from wasn't sure. They said she's at least a year old but she's so small, I highly doubt that! She looks nothing like pictures of one-year-old ball python females I've seen online.

She's roughly 22 inches long and weighs 211 grams (she's still thin but better than when I got her, we're working on it). Based on her length and weigh, about how old can I assume she is? I know there's a lot of leeway either way, but I'd like to have a general idea of her age. Thanks!