What a cutie! Welcome Lucy!

And I see you've recently joined us, so Welcome to you both.
I know you want to do everything you can to help her settle in, so let me just advise you that for BEST results, you should not handle her until she has
fed easily at age-appropriate intervals at least 3 times. You asked about offering food in a couple days, & without a crystal ball, I cannot tell you whether
she'll be fine with it & digest well, or if she'll still be stressed and barf it up. She is yours now, so you'll have to make the decision about whether to wait &
follow "best practices". If a snake regurges a meal, it's a set-back...because it takes time for them to regenerate their digestive enzymes, and if you feed
them again too soon, they'll regurge again. So, it's safer to wait at least a week before offering food if you want to be sure it stays down. Keeping snakes
is an exercise in patience for us all...but they're worth it.
Hard to be sure, but from the photo above, her eye looks a little cloudy to me...so she might be going into shed anyway.