Should a very fat 850lb woman wear 7.5 inch high stiletto heels with very thin titanium heels or would they snap?

An 850 pound woman could not balance in the heels so high, or carry the body's weight concentrated entirely on the balls on her feet. Usually 850, a woman can hardly walk, if she is mobile at all.

Women usually stop wearing high heels at the point where a twisted ankle can break a leg or cause a dangerous fall. Fat doesn't make you stupid.