Any ideas for the perfect tattoo?

Okay, so recently me my mum and sister have been through alot! We've always managed to stick by eachother. Recently my sister and her boyfriend split up after a 4 year relationship. This affected myself as he became my bestfriend, we always mucked around ( we had our own handshake! ) It has also affected my mum, as she thought of him as a son. Alot more happend to us in the past, and we just seem to be in this unlucky spell! I wanted to get a tattoo to represent my relationship with my mum and sister, and for all the things we had been through together. I just really cant think what design would help express the feelings.. Its hard to put in to words how i want it, and what i want it to represent and how it represents it. I just really want some help. Please help!?! Thanks xx