Sling guarding dead cricket

I'm new to tarantulas. Just got this C. Versicolor sling on Saturday. Fed it a cricket yesterday morning. Put it in the bottom of the enclosure and I guess it dragged it up to its web? Didn't know they did that honestly. Looks to me like it's eaten most of it and all that's left is parts of the carcus. Everything I've read about feeding tarantulas says take any left over food out after 24 hours but this lil fella has just been posted up guarding this carcus. Is it fine to leave it until the T decides to move whenever that is? I don't want to chance having to bolt on me. Also don't want to stress it out as the vendor I bought it from said it might be close to molt because others from the same egg sack have molted. Thoughts?