My dd always has her hand down my top! It is definitely just warm and snugly to her. She is still bf.... And will ask for boob too.... While her hand is down there like she's digging for gold.... But given the chance.... She also goes for my mums too..... And well..... They don't have the 'goods' like mine, which is why I put it down to comfort.

Dd was also obsessed with elbows for a while there too

I wouldn't think your dd is being spiteful.... She just likes it and doesnt realise she's being rough. If she bites, or pinches.... I'd just saw OW.... Be gentle and take her hand away. If she smacks you back after that, I'd say.... No hitting.... Or something.... And move away for a min.

Don't be embarassed.... Seems there are a few boobie fondlers out there