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
AAAAND, you can just wait till next patch, cause i`ve heard there will be a patch, which you can find IN-game, which make it easier to win. Not sure tho