Heres some items you might wanna try on her if you wanna build her kinda like a tanky dps jarvan. This build is hella expensive so its your call on what all to get. I just cobbled this stuff together on the fly, maybe later once people get out of the mindselt that shes nothing but a tank i'll actually put some effort into fleshing it all out.

Just saying, she doesnt have to be built 100% tank, she can be a fighter too but you do wanna get some defenses if you go fighter because you will be in the thick of the fight.