Also, what she does is completely different from how you squeeze your toothpaste.
Not much, but some, because BOTH are so trival that they neither have any virtue not to submit to the authority God has ordained~beginning with Christ under God; down to the wife under her husband; to believers to government authority; to believers under the elders; to children under their parents. Outside of God, there are no perfect authority,
yet that within itself does not remove their authority
. Some parents are not perfect, or even good roles models, yet they STILL have authority from God to guide and command their children as THEY seem fits using the word of God as their guide, which even if they do not, that does not release their authority.
1st Corinthians 11:3~"But I would have you know, that the head of every man is Christ; and the head of the woman is the man; and the head of Christ is God."
As long as the one having authority, does not command from those under them, a commandment which is not against the scriptures, then one must submit. The chain of authority given by God is so important, that once it is rejected and made light of, (which most TV programs do so) or, mocked, then nothing but chaos and rebellion and judgement follows from God....in some cases divorce, which is the easy and seemly justifiable way out of one's authority ordained by God. The next marriage would be no better, and most likely worst, and rightly so.
She does not have to submit to an unloving husband.
She absolutely does. A loving husband makes it easier, yet a unloving husband, does not free one from his authority. Marriage is a fifty year commitment, that's why it is so important for parents to be involved in WHO their children are desiring to be with. Once married then they must work to make it work. No where does she have a right judge her husband's love to determined IF she is going to submit~she does so, because God made him her head. What right does any of us have to ever disobey Christ? None whatsoever. As a husband I'm commanded to love my wife, and I do not have the right to judge her love toward me, to determine if I "really want to invest my love in her, if she's not loving me to the degree that I THINK she does."
By nature we all love ourselves more than others, which is really the root cause as to why this woman is having trouble obeying her husband's will to stop doing something that he no longer desires her to do~she's thinking more of herself than obeying her husband. My wife has not always enjoy me saying no, but to her credit, she has always tried to please me, and I likewise to the same back to her. I have learned that when we do that which God commands us, that it truly comes back and serves us for the good in the long run, but at that moment, it may not be easy for the flesh to submit.