In a busy leisure type place today, DS was fiddling with a sweetie machine which had swallowed our money. DM goes off to find staff to sort it out, I turned for literally 15 seconds and my bag, which was on the floor next to the machine disappeared. Cue frantic searching, DF accusing me of having left it somewhere else and finally, DM spotting a lady right at the end of the place holding it.
I rushed over, grabbed it from her hand and said 'I'll have that back please'. She didn't want to let go so I gave a little tug and it came free. I said thank you and walked back to where my family was standing, but she followed me over and said that she had thought it was her DMs bag. Her DM did have a bag, but it was very much smaller than mine and a completely different colour. My DF told me to apologise as she'd made a mistake and mistakes can happen (his words), and she was quite intimidating, so I did, but she just gave me a mouthful and said she'd have left straight away if she'd intended to steal it.
We left and they followed us out (so they must have been ready to leave when she took it), walking behind us and being quite intimidating again.
Did I react wrongly in assuming when was thieving it? My gut instinct is that she was and had already made up her story in case the owner (me) found it before she left.