Question!!

My cousin is now an alumni of a Delta Delta Delta Chapter. She has a few shirts and sweates etc, that are basically band-new, but don't fit her anymore. She wants to give them to me. I have rushed for a sorority, but never went through with it. Is it wrong for me wear these shirts? Also, it is wrong to use a tote that has delta delta delta on them?

If so, can I get them embroidered saying "family" or "friend" something along those lines so it is obvious that that I'm not an actually sister, would that still make is wrong?