Shouldn't she have had an ?

My fiancee and I are still virgins. We will be married very soon. Although we're still virgins we do like to fool around a little bit. The other day I rubbed her for about 30 min with the backside of my electric toothbrush head (while it was on of course). She said it felt good but didn't seem to "really" enjoy it. I don't understand. I of course didn't say anything to her as I don't want to make her feel pressured to perform. Is this normal though? Shouldn't this at least get you riled up if not give you an ? She has never had an or had .