Her hair probably turned orange. I’ve dyed my hair every color under the sun. It takes a lot of upkeep. IF she went to a good hairstylist, they would have bleached, put a toner on it to mask the orange, then blonde dye. It would have been a lengthy sit in the chair (6+ hours). Then she would go back every 6 week maximum to re-dye the bleached parts and bleach the roots. Minimum three to four hour sit. I’ve spent hundreds of dollars on shampoos, conditioners, masques, you name it because you have to wash it a very certain way to keep the dye in.
If she just bleached it and dumped box blonde on her hair or had a “friend” do it, that’ll be gone in four weeks top. The hair will be fried, the bleached parts will turn carrot orange. There’s some evidence in the few hatless pictures that has happened.
I bet TLC has hooked her up with a celebrity stylist in LA to fix it, but she’s got to get there first.