A larger, heavier, more solid vehicle would have saved her life.

Or not- in some types of accidents, regardless of vehicle size, people are going to die.

If more (all?) of these overly-large, overly heavy, gas-guzzling unnecessary pieces of crap could be taken off the road, the situation would be considerably safer for folks driving rational-sized vehicles.
Then too, they create a false sense of invulnerability in drivers which causes them to take chances that needlessly endanger themselves and others. The bloat-mobiles are in large part making the safety problem worse- they're not part of the solution.

Folks who really need 4WD - not folks who THINK they need it (I've lived in the northern mountains with 140 inches of snow anually & temps down to -30°F) for 30 years and got along just fine without it driving to work daily for 27 of those years) don't have to drive a Lincoln Masturbator or a Chevy Cetacean - e.g. my current 4 cyl. Toyota 4WD pickup.