My advice would be to do whatever necessary to stop these habits now. When she has teeth, biting is more painful than you can imagine! Most babies will bite at some point, some more than others, so it is important to make it clear they are not allowed.
There are a few things you can try.
If she is actively chewing, I would unlatch her. If you can't get your finger in her mouth to unlatch her, then you can shove her nose into your boob. Sounds cruel, but it will work. If she can't breathe, she'll let go to move her head. Anytime she starts to chew, make her stop.
She's still very young, so it might be a bit more tricky. Normally, I would say anytime chewing or biting occurs, stop the session for at least 30-60 seconds with a firm NO. If they bite again, stop the session entirely for at least 30-60 minutes. They learn quickly that biting means an end to feeding. But that is also for babies that usually have gotten their first teeth so are from 6-10 months old and more ready to understand that sort of thing.
Also, try to gauge WHEN she is chewing. I found with my DS that he tended to bite most often when he wasn't really interested in feeding or was at the end of a feed. So, I was very careful that the boob became a "No play" zone. I actually had to cut out comfort sucking all together for several weeks until he learned not to bite and a I learned better what his cues where right before he would bite.
I cut sessions off earlier -- once he hit a couple of sucks between swallows, the session was over. I did that until I figured out how to tell when comfort sucking would lead to play would lead to biting. Now I can let him comfort suck again, but have to watch him very carefully.
Again, this was a bit easier for me as DS was already 8 months old or more and eating solids so I didn't feel bad cutting his sessions a bit shorter.
I would see how you can modify some of these usual tricks to meet her needs at such a young age without impacting her need to suckle too much. This might be a bit of a challenge!