I'm sorry things are so difficult right now, and I hope everyone can come to an understanding, hopefully beneficial to all. It might not look how you planned but whatever is healthy, especially for your son, is most important.

Was j sick when she and her husband began looking for another partner? Has her illness gotten worse? There could be a combination of issues.

She thought she would be happy like this (for the happiness of her husband) and isn't...

she sees how well you and her husband get along and wishes beyond belief that she could satisfy him that way...

her symtpoms and the consequences of them could be getting worse and more painful. Depending on the person will depend on how this effects her emotions, thoughts and what she says.

Focus on your son. Your job, where you live, your time to care for j and Master are all hinged on his needs. I hope that will help some.