Peter is writing about being tortured for Christ, Not an excuse to live with an abusive spouse.
My bad . . . chapter two (the example of Christ) extends into chapter 3. See below and note the word "likewise."
1 Peter 3:1-2 NKJV - "Wives, likewise, be submissive to your own husbands, that even if some do not obey the word, they, without a word, may be won by the conduct of their wives, when they observe your chaste conduct accompanied by fear.
2 Pet 2:19-23 is [not] only about torture. It is about the sufferance of all varieties.
1 Peter 2:19-25 NKJV - "For this is commendable, if because of conscience toward God one endures
grief,
suffering wrongfully. 20 For what credit [is it] if, when you are beaten for your faults, you take it patiently? But when you do good and suffer, if you take it patiently, this [is] commendable before God. 21 For to this you were called, because Christ also suffered for us, leaving us an example, that you should follow His steps: 22 "Who committed no sin, Nor was deceit found in His mouth"; 23 who, when He was
reviled, did not revile in return; when He suffered, He did not threaten, but committed [Himself] to Him who judges righteously; 24 who Himself bore our sins in His own body on the tree, that we, having died to sins, might live for righteousness--by whose stripes you were healed. 25 For you were like sheep going astray, but have now returned to the Shepherd and Overseer of your souls.
Continued to chapter 3, and note the subheadings of the NKJV Bible:
Submission to Husbands
1 Peter 3:1-17 NKJV - 1 Wives, likewise, [be] submissive to your own husbands, that even if some do not obey the word, they, without a word, may be won by the conduct of their wives, 2 when they observe your chaste conduct [accompanied] by fear. 3 Do not let your adornment be [merely] outward--arranging the hair, wearing gold, or putting on [fine] apparel-- 4 rather [let it be] the hidden person of the heart, with the incorruptible [beauty] of a gentle and quiet spirit, which is very precious in the sight of God. 5 For in this manner, in former times, the holy women who trusted in God also adorned themselves, being submissive to their own husbands, 6 as Sarah obeyed Abraham, calling him lord, whose daughters you are if you do good and are not afraid with any terror.
A Word to Husbands
7 Husbands, likewise, dwell with [them] with understanding, giving honor to the wife, as to the weaker vessel, and as [being] heirs together of the grace of life, that your prayers may not be hindered.
Called To Blessing
8 Finally, all [of you be] of one mind, having compassion for one another; love as brothers, [be] tenderhearted, [be] courteous; 9 not returning evil for evil or reviling for reviling, but on the contrary blessing, knowing that you were called to this, that you may inherit a blessing. 10 For "He who would love life And see good days, Let him refrain his tongue from evil, And his lips from speaking deceit. 11 Let him turn away from evil and do good; Let him seek peace and pursue it.
Suffering For Right and Wrong
12 For the eyes of the LORD [are] on the righteous, And His ears [are open] to their prayers; But the face of the LORD [is] against those who do evil." 13 And who [is] he who will harm you if you become followers of what is good? 14 But even if you should suffer for righteousness' sake, [you are] blessed. "And do not be afraid of their threats, nor be troubled." 15 But sanctify the Lord God in your hearts, and always [be] ready to [give] a defense to everyone who asks you a reason for the hope that is in you, with meekness and fear; 16 having a good conscience, that when they defame you as evildoers, those who revile your good conduct in Christ may be ashamed. 17 For [it is] better, if it is the will of God, to suffer for doing good than for doing evil."