It sounds like she's waking because she's hungry, which is perfectly normal for a 3 month old. Usually at that age lo's will wake anywhere from 0-2 times a night for a feed.
If she's waking at the same time every night, you might have a night waking on your hands. However, the fact that she's eating a normal meal tells me she's probably hungry for it. Best advice, start doing a dreamfeed at around 10-11 pm (prolly closer to 11). She will probably wake again somewhere between 2 and 4 for another feeding. Hopefully that will hold her off after that feeding until she gets up. If she wakes at 1 again, try soothing back to sleep using the paci, or whatever method you use.
The dreamfeed will help you have a little more control over her night feed schedule. She still needs at least 2 feedings a night, she may need that for a few more months.
Hope this helps!
*HUGS*
Sonya =P