I know it can be very frustrating when it seems like they should be doing something but aren't, especially when it's your first and you are so excited to see them go, go, go!
Child development doesn't happen at a certain time. Babies learn to do things in a window of time. So for every baby that walks at 9 months, there's one on the other end of the spectrum that doesn't walk until 15 months.
Things to look for include how well she supports her head, how easily she rolls over, and how she holds her body while sitting. If she's really stiff or really floppy it could be a sign that something isn't right. Otherwise, just be patient. She'll get through it! :)
To encourage her to crawl, buy toys that roll like cars, pull toys and balls. Small ride ons (the kind you push forward with your feet but don't have pedals) are very encouraging too.
To encourage her to pull up, get her attention with a favorite toy and then set the toy up on the couch while she watches. Stand her against the couch so she can see the toy if she doesn't make a go for it, and then set her down again. She will cry if she's frustrated, but one of her tasks at this age is to figure out how to coordinate her body to get what she wants. The first year is all about mobility!
Good luck to you! I'm sure you'll be putting the remote on top of the TV in no time! :)