No where to turn

I live in Florida and my parents live in Ohio.  My mom was diagnosed about 3 years ago.  In the past year she has gone downhill quick.  When she talks she doesn't make sense anymore.  My parents are visiting me now and it has been hard for me but my dad still doesn't seem to understand everything he should be doing for her.  I feel my mom is not getting the best care from him but what can I do?  He is doing better since the last time I saw them.  My kids are 8 and 4 and can't really understand why my mom does some of theings she does.  I am always upset when they go home or we leave their house because living so far away I don't know what is going on everyday.  I have 3 brothers but they seem like they don't care.  One brother even lives with them and doesn't help them out at all.  I keep trying to get my dad to move closer to me but he just won't do it.  My mom doesn't take all her pills very well. She chews them up.  We've tried yogurt or applesauce but she still chews them.  Does anyone have any suggetions for this?  When I'm around I try to talk to her but the last few times I've seen her she does not make sense about anything.  Is there anything I can do to help?  I feel so helpless!!!  Thanks for listening.