reyna has a lot of respect for annabeth! even back when reyna didn't know if she should trust the greeks or not, and then leo blew up her camp, she was still willing to listen to annabeth even though she had no reason to?? like she just gives off this pretty dependable vibe, like she is just the kind of person you can trust for things that really matter? and reyna put her trust in her even though she had.... a whole lot to lose if it turned out annabeth was deceiving her.....

but yes, she also likes her as a person as well. their sense of humor is p similar and they both (more or less) place importance to the same things so like. they get along pretty okay. and reyna could have been bitter or upset that percy and annabeth were a Thing since reyna liked percy, but instead she just set that aside... probably for the best since i think annabeth and reyna get along better than reyna gets along with percy LMAO but yeah. she likes her, she considers her a friend? would totally beat people up for annabeth.