Rather than feeding more often than once a week, it's better to size up the prey to what is roughly equal to (or slightly less than) the diameter of the snake at the
widest part of their unfed mid-body. One other thing does occur to me, whenever a snake eats like crazy & doesn't seem to put on the amount of weight you expect
(& it's hard to tell from just these photos, but she does look a bit "string-bean-ish" to me too), is that you should have her stool tested for internal parasites with whom
she may be "sharing her meals". Call the vet & take them a fresh stool sample when she gives you one. It's not hard to de-worm a snake, nor is it risky...just a dose or so of oral medication that's quite safe.