Saw a star stop make two 90 degree turns then vanish

My mother and I were sitting on our back deck star gazing and enjoying the summer breeze. The was a common thing for us to do and gave us a good time to talk.My mother first noticed a star moving and said "look a satalite" when she pointed it out to me I saw what appeared to be a star moving. We watched it till it stopped and made an abrupt 90 degree turn moved just a little bit and then made another abrupt 90 degree turn then vanished. I could be wrong but ive never seen satalites do this before. It looked like any other star not real bright and no distinct color just white.
Date is approximate.  PD