So, there 3 phases of that game^
1. You see first 3 cards
2. You see other 2
3. You change cards you dont like
If she`s not folding after 1 phase, that means she already have better hand. It doesn`t mean you should quit, cause u still have chance. Skip second phase and go straight to changing cards. Now, this is tricky, and require a lot of thinking at first. If you have pair, you should keep it, and change other 3 cards. So goes triple cards. If you dont have any combinations, change all your cards. Same, if you have no combs, but have ace or king, keep one of them. You have a chance getting second ace or king. Or even better, you can get winning card after change.
The whole game require a lot of patience, so buckle yourself up, it`ll be a long trip
AND, do not raise money, never do that. Keep it minimum all the time. Forget that button exists, while playing against Rose