Step up basis for property in life estate for capital gains

My SIL had an irrevocable first party SNT. Upon her death her daughter received the property in a life estate as the tenant. When her daughter, the tenant, passes away, does the remainderman get a step up basis from her daughter or does the basis go back to the original price my SIL paid for the house?

 

Also, the tenant is disabled and on Medi-cal. When she passes will DHCS do an estate recovery on the property?