What is the ruling on a girl marrying a young man who touched and kissed her without penetration, and then proposed to her? And is it permissible for them to show affection and kiss each other after the marriage contract but before the wedding? And how can a girl make up for 15 days of fasting from previous years (2011-2014) without giving charity?

Regarding the first question, you must offer sincere repentance. If both you and the young man repent, then there is no impediment to your marriage, and after the marriage contract, you will become his lawful wife.

Regarding the second question, if you delayed making up (fasting) due to a legitimate excuse, then you only need to make up the fast. If you delayed without an excuse and knew the impermissibility of delaying, then you must repent and make up the fast, along with paying expiation by feeding a poor person for each day. However, if you were ignorant of the impermissibility, then you only need to make up the fast.