Is something wrong?

R

I have two girls one is two months old the other is three. Lately I noticed that my three year old talks with a high pitch voice when her and I play around. High pitched to the point where it sounds like what she is saying is fake. We keep her included in everything we do so she doesn’t get jealous but I don’t know if that’s a type of mechanism she is using out of attention. Anyone else’s toddler talk like that?!