n, What a freaking @itch! I would print that letter off and keep it safe...you just may need it down the road. She, of all people, should not be addressing your support...sounds to me like they are in desperate need of cash. As for the time share, if it is in the divorce decree that he is to receive it, then he should be paying the fees...not you. It sounds to me like she's hoping you'll take the bait and use it...therefore, you would need to pay the fees. Don't buy into it. She's trying to set you up. She wants you to come back to her in writing with something smart so that she can validate her "claims" about you. Let it go!
Who is she to be telling you about spelling? She can't even get the support right. Sounds to me like she's starting to lose it big time.
Do not respond to anything she sends to you. Don't even send an email to your xh. It is clear he's not reading his emails and she's made his a hostage in his own stupid situation. An adoption? I don't think so....history has been rewritten all over the place.