lost benefits

my child has been physically and mentally disabled since birth. she receives ssi and medicaid. but when my husband seeks employment her benefits get cut out. just because he works does not not mean she is not disabled. yes he can put her on his insurance but copays are higher and medicad for a child has no co pay. this makes it more difficult financially. this does not seem fair to my child or our family. why is this the rules for families that have to depend on the government for help? the jobs that are available don't pay much as it is. so why does my child have to loose her benefits and medicad when that is suppose to be her source of income to help her? and by the way my husband has worked for 20 years so should'nt my child receive regular disability?
she will not ever be able to care for herself or live on her own. and i just think she deserves more than cut benefits. don't you?