The first one looks pretty real. Her usual personalization is "Love to ______" and her Carrie is always higher than her Fisher. So the first one looks real. That is just my two cents.
The "r"s look like it's from the same hand, looks authentic, although many would say most of her TTM autographs are/were secretarial signed.
I have a couple signed items that look similar, I think she signed (here web page she even listed an addresses to send for autographs).
There's an excellent FB page called 'Star Wars Autograph Universe' that has some folks on who actually authenticate SW sigs, might be worth joining and posting there. They're pretty much the authority on these things.