Why is it that....................??????…

I always forgive my cousin but she never forgives me back. Its like hello if you want to make amends with a person you have to forgive them too, not just the one person, am i right. I mean all she says is alright while i pour my very soul out to forgive her just because once a month i turn into the Wicked Witch of the West and just goes like "alright" like ok did that really matter to you, or not.