Obligations as caregivers have put strain on marriage

DEAR ABBY: My husband and I have been taking care of my father-in-law for four years — getting his groceries, going to the bank, picking up prescriptions and doing different tasks. He’s disabled and lives in an upstairs apartment with no access to getting downstairs. He can’t walk, bathe himself or get in and out of bed by himself. He has hired a nurse to get him in and out of bed every day. Because we live 30 minutes away and we both work, there is no way we can manage this.