I'd say it's v likely she's had Botox looking at these howeeeever, I have way worse forehead lines than she did, but they look so much more pronounced when I'm dehydrated and unmoisturised. If I make sure I'm drinking a tonne of water and moisturise they honestly don't look as bad (I just never end up remembering to do that lol).
Not gonna judge her for having Botox though, I loved it, it got rid of all of my forehead wrinkles completely and I'd been self conscious about them for the whole of my 20s. If I ever stop being pregnant I'll get it again