Being a JW is an all or nothing proposition.
If a person attempts to straddle the fence, maintaining JW association but not fulfilling all of the requirements dictated, JWs will usually try to push the person off the fence to one side, and if that fails, they will push in the opposite direction. One side = Fully In, the other side = Fully Out.
As stated previously, since you have no JW family to maintain relationships with, there is little benefit or point to fading. By attempting to keep your Kingdom Hall friends but not fulfilling all of the religion requirements, will result in pressure on you to get off the fence. If you made a decision to leave the religion as you appear to have done, then why subject yourself to needless pressure and stress?
I feel sick at the thought of getting back together and putting myself through that nightmare again
You already know what you want and what is likely best, but are allowing 'strangers' to influence and question your thoughts and beliefs as to what is best for you and your children. Remember, those strangers (including us) will not be dealing with the consequences if you choose to follow their advice, but you will.
"what kind of example are you setting your daughter with regards to the truth and with regards to Jehovah's stance on marriage?"
It sounds to me as setting an example to your daughter that it's proper to stand-up for herself and her children, not accepting being abused or treated badly, regardless of who it is that is inflicting the abuse.
JWs give the reason not to divorce because Jehovah hates divorce, which is the dissolution of a marriage which is a vow between two people. They typically ignore the reasons divorce may be necessary, appropriate or healthy. A person could reason, even if Jehovah hates divorce, that doesn't imply he doesn't understand or agree that it may sometimes be necessary.
JWs routinely disfellowship a JW who is seen smoking a cigarette, or whose car is observed parked overnight outside the residence of a member of the opposite sex, or for not unreservedly accepting the GB are chosen by God. In disfellowshipping and announcing the person as no longer a JW, isn't that forcing the dissolution (divorce) of the person's vow to Jehovah?