As a Christian, I believe in the power of prayer. I also believe that we are supposed to make every "mundane" effort that we are capable of even as we call on God for aid. I won't go into a lot of detail at this point, since that would involve a lot of Scripture and get rather theological, but my church teaches that God expects us to do all we can do, at the same time understanding that it is all in His hands.
We don't sit around the house and not work, expecting God to provide us with all the necessities of life out of thin air, now do we? No. We pray for God to help us be able to work and provide for our needs, and then we go out and actually work.
When a car swerves toward us on the road, do we move out of the way or stand there expecting God to perform an overt miracle and stop the speeding car? We move out of way, and when we can breathe again we say "thanks Lord" that we didn't get squished.
Likewise when we get sick, we're supposed to do all that we are able to get well, while calling on God to aid our efforts. This includes going to the Doctor, taking your meds, calling an ambulance if need be. I believe that God does sometimes provide miraculous healings because I've seen it happen; I also believe that He is offended when we sit on our butts and demand an overt miracle. "It is written, thou shalt not tempt the Lord thy God."
Now, having said that... I think 25 years in prison is very harsh, given that there was no malice or ill intentions here. In many states 2nd degree murder and voluntary manslaughter do not carry that much time; some 1st Degree murderers get out in 15 or less. I think anything over 2 years would be overkill, because they very much wanted her to live...they just made a questionable choice as to method. I think the loss of their daughter, the shame of being arrested and convicted, have probably knocked some sense into them; I'd probably give them five years probation and time served if I were the judge.
I have to say this also: I notice that those who are pro-choice on abortion are also among the harshest critics of these people. Not to restart the "it's a person/it's not a person" debate (I've heard enough of that ad-nauseum), but you realize that supporting an absolute and unfettered right-to-choose of a pregnant mother to end what half of America believes is at least arguably a human life, on the one hand....while at the same time being so harshly critical of these parents who chose to rely on one method of healing they believed in rather than another...could be construed as a little ironic yes? I know you'll say an 11 year old girl is inarguably a human being and a fetus "isn't", but you're aware that roughly half of the country considers that point debateable?
Okay, forget about that then: I have some sincere and serious questions for those who believe these parents should get the full 25 years in prison:
If their daughter had died because they chose to attempt to use "alternative" or "holistic" medical practices on her, perhaps aided by a doctor who supported such therapy, would you still give them 25 years?
If their daughter had died in an automobile accident, caused by the other driver, but her parents had chosen not to make her buckle her seatbelt, would you still give them 25 years?
I think these are relevant questions and comparable situations.