Timothy hay is fine. If you want you CAN feed bunnies alfalfa until they are 7 months or so but you don't have to. (In my opinion it's best to start them off with Timothy because it can be hard to switch them from alfalfa to Timothy). Also you don't have to limit her pellets right now, not until she is 7ish months.
I think the proof is in the pudding, as long as she is growing and putting on some weight you are fine. I will attach a professional website that tells you what you should feed your bunny when. As long as she is eating lots of hay your fine