Dicipline, Did I get it wrong?

Agree with Kiora but would also remove the table and thus the temptation as a matter of safety. Some children will climb anything that takes their fancy but you and we know this is not a good idea! Distraction/diversion is likely to work better than No on its own at 2 and some parents can be a bit funny about their little ones being "told off" (I know!)

Kiora's advice not to give it another thought is good.

No, you didn't get it wrong at all. In your shoes I would have told the child once and then physically removed her from the table. My daughter would do the same. No means no.

On the surface this looks like a simple disagreement but I think it goes a bit deeper. Relationships with adult family members can be complex. It sounds to me as if the dad was trying to assert his authority. Letting you know in a very clumsy way that 'I'm the leading adult in this situation' on some level he knew you were right but his silly male ego wouldn't let him admit it. I wouldn't give it another thought. If it happens again I'd simply remove the little one with a playful "come to Nanna Sarah let's look at the whatever"

Ananke I can see why you think you were being given a warning. If so it is a pretty devious way of delivering that warning. On the other hand they may have just been chattering on and had totally forgotten the incident at your house. The young parents do sound a bit immature, if they think that a toddler who is 'only putting her knee up' will not be up dancing on the table as soon as she is strong enough to get up there. They should also realise how lucky they are to have family who are willing to babysit while, presumably, they are off enjoying themselves. YOU are doing them the favour, not the other way round. Could you have a quiet word with your step-daughter about this and ask what is her prefered method of dealing with the wee one when she does something she shouldn't? If not then I would suggest that next time they visit with the wee one, you make a point of removing the wobbly table to another room, saying that you are worried that it will fall over or break and hurt her. Your house, your rules.

Are you supposed to sit back and smile at her antics when she sticks something in an electric socket or pokes paper into the fire? The parent's will have to learn what you know already - that a toddler needs to be removed from any source of danger and distracted with something else if they keep going back.