[Petronski]

The question is, is 15% chance of getting AIDS better than no chance of getting AIDS?

And if the sex is non-consensual, it is rape...a baseball bat would be preferable, yes.

[sinkspur]

The question is, is 15% chance of getting AIDS better than no chance of getting AIDS?

That's not the question here. She cannot abstain; he won't let her. So, is some protection better than none?

[Tantumergo]

"...a baseball bat would be preferable, yes."

Might I suggest that a machete would be more "inculturated" and probably more scriptural as well:

Mt 18,8 "And if thy hand, or thy foot scandalize thee, cut it off, and cast it from thee. It is better for thee to go into life maimed or lame, than having two hands or two feet, to be cast into everlasting fire.
9 And if thy husband's member scandalizes thee, cut it out, and cast it from thee. It is better for thee having a eunuch husband to enter into life, than having all the parts to be cast into hell fire."

From the Deacon Tantum ergo translation, copyright whatever.