First and foremost listen and believe everything HW told you. Get an attorney and do it quick. You will also need to document, document, document...which since you have been on this site since you were preg. with K, should be somewhat helpful to you. You need a written history or what (if anything) he has paid, how often he has seen her and the conditions under which it occurred. If they do infact marry after your D is final then that solidifies her as someone that is able to pay CS for K, whether he has a job or not. 50/50 is the standard, but if you have an attorney and documentation it is also negotiable. Since Cal. is a no-fault D state, the circumstances of why do not matter, just who provided the best environment for the child. I wouldn't tell my MIL anything else, bottom line...H is her son and blood is ALWAYS thicker than M. I am finding out the hard way too. Everyone will protect their own interest and that needs to include you. K is your priority so fight for her.
M:39 H:39 K:S14;D8 T:22yr M:15yrs S:12/28/07 EA/PA 3/14/08 OW preg 11/17/08 born 12/12/08 his ~~~~~~~ Never allow someone to be your priority while allowing yourself to be their option