Honesty is the best policy. If you're caught trying to pull a fast one, your reputation will suffer. The only way you will be able to restore your good name is by offering a sincere apology and changing your behaviour. Make it your mission to deliver painful truths and fulfil your promises, even when it costs you time, money and energy. An unpredictable relative is causing problems for you at work. Think about taking a leave of absence to care for them.