It MIGHT be enabling her a little but like you said, its early days. Focus on your kids. Dont worry about her right now. When she gets back, get a schedule in place and make her stick to it. Get your kids for the weekend and just love them to death.
Me: 48 y/o W: 47 y/o Together: > 20 yrs BD: Dec '15, then S 2nd BD: Mar '16, then I filed for D April '16: started piecing