[General] observing of the "sequence of tenses" in 9 sentences

[vil]

Dear teachers,

Would you tell me whether the “sequence of tenses” is observed in the following sentences?

[FONT=&quot]Kristin had prepared an acceptance speech, but the "Spy of the Year" title went to Hanna instead.[/FONT]
[FONT=&quot] [/FONT]
[FONT=&quot]Mike had been skating on thin ice for two hours when he heard the first crack.[/FONT]
[FONT=&quot] [/FONT]
[FONT=&quot]Dianna has been warning Mike for years about his skating habits, but he just won’t listen.[/FONT]
[FONT=&quot] [/FONT]
[FONT=&quot]David- a delicate, sensitive soul – accompanied Mike to the pond and then to the hospital. After David had waited an hour, the doctor announced that the skater was free to go.[/FONT]
[FONT=&quot] [/FONT]
[FONT=&quot]After today’s skating trip ends, David will have waited a total of 1,232 hours for his friend and will have read countless outdated magazines in the emergency room family area.[/FONT]
[FONT=&quot] [/FONT]
[FONT=&quot]Grace refused to speak to Mike ever since he declared that “a little thin ice” shouldn’t scare anyone.[/FONT]
[FONT=&quot] [/FONT]
[FONT=&quot]Mike, in a temper, pointed out that Grace’s motorcycle had sent him to the hospital even more frequently than his skates.[/FONT]
[FONT=&quot] [/FONT]
[FONT=&quot]In an effort to make peace, Kristin will have spoken quietly to both combatants before they ever stop yelling at each other.[/FONT]
[FONT=&quot] [/FONT]
[FONT=&quot]Despite years of practice, Tim has achieved success only on rare occasions, but he keeps trying to resolve his brother’s conflicts anyway.[/FONT]
[FONT=&quot] [/FONT]
Thank you for your efforts.

Regards,

V

 

[Tdol]

In an effort to make peace, Kristin will have spoken quietly to both combatants before they ever stop yelling at each other.

I can't see much need for the perfect aspect here.

 

[vil]

"In an effort to make peace, Kristin will have spoken quietly to both combatants before they ever stop yelling at each other."

The future perfect needs an end point (in this sentence, the end of the
yelling) before which the action occurs.