Hello Mommies!

I am a ftm and this whole parenting thing is super new to me and at times I don't know how to deal with certain situations like this. I take my toddler to this parent and kid classes so that she can socialize with other kids.So here's the tricky situation, today she was playing there with few toys when another kid decided to snatch it from her hands and my baby didn't even resist nor did she cry. she quietly moved to the other toy though she would quietly try to touch the same toy again when the other kid was distracted and this happened quiet a few times as I was watching her. I felt so bad for her and that lead me to think how do I teach my daughter to stand up for her self or is it too early to expect from a 15month old toddler?