Is this normal?

Hey so I got a ball python about a week ago in the photos I took she was basking under the heat lamp. I've been trying to make sure the humidity is right and the temps are at a solid 90 on the warm side and 78 on the cool side. I haven't handled her yet since I've been trying to let her get used to the enclosure. She's about 5-6 months old. I'm really worried about this because I'm kinda new at owning a snake and idk if this is bc she's going to shed soon or smthn. Any info helps ty! T-T