Were do we send toys for are grandchildren?

I am feeling pretty sad today.  Let me tell you my story and someday I would like my daughter to understand me.   I have tried to provide to my children as a single parent now for years , it has been not easy with 3 of them.   So finally i say wow i did it the last is about to turn 18 and then i realize wow !  I still have my 24 year old still living with me with a grandchild (she is  also single parent too)  I told her to come live with me and i will help her not realizing this would turn out to be well past a year.   The attachment is now so much there with my grandchild they came when he was 2 months old .   Loving all the time  and then a argument starts because she is not being muture , i am not playing  the teenage game with her anymore can you do the dishes , help out etc..feed your child , get a job.

    Long story short she moves out doesn't tell me were i can contact my grandchild and i have no rights after providing for him over a year and half..   Wow i was practically the farther and i have no rights to know if he is ok??  can't send a toy  The saddest thing is he must be looking for Grandma