Favour for a friend (Parts 1-3)

Your friend is going to a special party, all of her friends are going to be there, She needs to bring a tiny with her to get into this party. She doesn't have a tiny and could never afford one. She asks you if she can shrink you and take you as her tiny to this party. She really wants them to think she is cool and impress her friends by bringing her own tiny with. She has never had a tiny before and she looks really excited about this.

She promises to make it up to you after the party is over. Any thing you want for doing her such a big favour.

How hard can it be, you are sure you can make it till the end of the party. Well, She never did say what kind of party this is exactly.