How will I find that her love is true towards me?

Just be frank with her, or better 1st hold her hand and kiss her on her lips. If she respond positively then it's ok. Good luck.

It's not so easy to answer to this question because never you can be sure of the love of a person.There are moments when you think that your love is requited and the person next tou you loves you so much but something happens and the day after you are separated.You can have proof of the love that a person feel for you in the worst moments of your life,when you're sick,when you friends leave you and you see all black.If this person is still with you and it dries you tires surely he/she loves you. But I hope you don't need to pass this meoments to test a love of aperson;i suggest you to give all the love you can give without requiring to be requited in the same way at 100%.

The best thing to do is to talk about our feelings with her and ask her if she feels the same. Part of love is communication and I know it can be hard as you dont want to be rejected but it is much better to know how she feels about you.

You guessed right, the best way to know is to ask. You can never be 100% sure unless it is coming from them. My advice is to gain enough confidence to ask her. Good luck!