Any pointers on making Bride Charlotte unkillable?

I know it’s not great, I was kind of just dumping random skills on her that I thought seemed good, but I’m no expert on synergy. I want to know if there’s a way I can build her where I can just throw her out there and have her come out okay, for the lulz (and also because I love her 💖). “Unkillable” is likely not possible for such an old unit, but if I can get close that’d be rad.

I know it’s not great, I was kind of just dumping random skills on her that I thought seemed good, but I’m no expert on synergy. I want to know if there’s a way I can build her where I can just throw her out there and have her come out okay, for the lulz (and also because I love her 💖). “Unkillable” is likely not possible for such an old unit, but if I can get close that’d be rad.