I love their interactions too for both of them. Her and Baralai becoming friends is a very possible thing to do and I can see him being the protective sort as well, even though he knows she's very capable of taking care of herself.

Baralai is very patient and doesn't like to fight unless he has to so that's a thing whereas Angeal likes to fight when he's in the mood for it. (SOLDIERs are trained that way.)

Angeal I can see taking up where Lulu and Auron had left off. He's the type to help out whenever anyone needs it and that includes the silly things too. Ask Zelda, she asked him to rearrange her furniture and he's a good cook.