They said the issues we're curious about are not a problem due to her age. She's perfectly on track and they look for the L, R and S sounds between the ages of 4 and 5. If she's still not pronouncing them correctly, we will bring her back after she turns 4.
We also had her hearing tested. Everything was normal, but we have to go back and recheck in 2 months because she was very distracted (and bored) during the tones part of the testing. They just want to do it again and make sure it was distraction and not an actual problem. She passed the other parts of the hearing test.
ETA: DD1 was awesome during the whole thing. She was cooperative and so damn cute. The speech woman was very impressed that she answered certain questions - she said 3 yos don't usually get the concepts. I was very proud.