Put more people in the bow and trim all the way down. Men tend to fight the boat, women relax and let it happen. Suck the board up to your butt, handle out some, RELAX, and let the boat pull you up. Also board position is important. Try to get it planning, which means it is going to be toes pointed towards the boat and you can slightly point the tip towards the boat using your lead foot. Commmon mistakes are being pulled out the front. Trying to stand up too soon. You can ride in the position you start in.
Once you get up three times you will always be able to get up and ride. It is about learning your body position. BTW I am a small guy LOL